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Hori K, Katada C, Okada H, Katagiri A, Matsuo Y, Yokoyama T, Yano T, Suzuki H, Shimizu Y, Furue Y, Nakanishi H, Koike T, Takizawa K, Hirao M, Yoshii T, Yamanouchi T, Kawakubo H, Kobayashi N, Shimoda T, Ochiai A, Ishikawa H, Yokoyama A, Muto M. Association between continuous cessation or reduction of drinking alcohol and improvement of multiple dysplastic lesions in patients with esophageal squamous cell carcinoma after endoscopic resection. Esophagus 2024; 21:31-40. [PMID: 38070099 DOI: 10.1007/s10388-023-01033-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/18/2023] [Accepted: 11/03/2023] [Indexed: 01/25/2024]
Abstract
BACKGROUND Multiple development of squamous cell carcinoma (SCC) in the upper aerodigestive tract has been explained by the 'field cancerization phenomenon' associated with alcohol drinking. Squamous dysplastic lesion is clinically visualised as a Lugol-voiding lesion (LVL) by chromoendoscopy. Whether cessation or reduction of alcohol drinking improves multiple LVL and reduces the risk of field cancerization has not been elucidated. METHODS We analysed 330 patients with newly diagnosed superficial esophageal SCC (ESCC) enrolled in the cohort study. The grade of LVL was assessed in all patients every 6 months. We instructed the patients to stop smoking and drinking and recorded their drinking and smoking status every 6 months. RESULTS Among 330 patients, we excluded 98 with no LVL or no drinking habit. Of the remaining 232 patients, 158 continuously ceased or reduced their drinking habit. Patients who ceased or reduced their drinking habit significantly showed improvement in the grade of LVL. Multivariate analysis showed that continuous cessation or reduction of drinking habit improved the grade of LVL (hazard ratio [HR] = 8.5, 95% confidence interval [CI] 1.7-153.8, p = 0.0053). Higher grade of LVL carried a high risk of multiple ESCC and head and neck SCC (HNSCC) (HR = 3.7, 95% CI 2.2-6.4, p < 0.0001). Improvement in LVL significantly decreased the risk of multiple ESCC and HNSCC (HR = 0.2, 95% CI 0.04-0.7, p = 0.009). CONCLUSIONS This is the first report indicating that field cancerization was reversible and cessation or reduction of drinking alcohol could prevent multiple squamous dysplastic lesion and multiple ESCC and HNSCC development. CLINICAL TRIALS REGISTRY NUMBER UMIN000001676.
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Affiliation(s)
- Keisuke Hori
- Department of Gastroenterology and Hepatology, Dentistry and Pharmaceutical Sciences, Okayama University Graduate School of Medicine, Okayama, Japan
- Department of Internal Medicine, Tsuyama Chuo Hospital, Tsuyama, Japan
| | - Chikatoshi Katada
- Department of Therapeutic Oncology, Graduate School of Medicine, Kyoto University, 54 Kawaharacho Syhogoin Sakyo, Kyoto, 606-8507, Japan.
- Department of Real World Data Research and Development, Graduate School of Medicine, Kyoto University, 54 Kawaharacho Syhogoin Sakyo, Kyoto, 606-8507, Japan.
| | - Hiroyuki Okada
- Department of Gastroenterology and Hepatology, Dentistry and Pharmaceutical Sciences, Okayama University Graduate School of Medicine, Okayama, Japan
- Department of Internal Medicine, Japanese Red Cross Society Himeji Hospital, Himeji, Japan
| | - Atsushi Katagiri
- Department of Medicine, Division of Gastroenterology, Showa University Hospital, Tokyo, Japan
| | - Yasumasa Matsuo
- Department of Gastroenterology, St. Marianna University School of Medicine, Kawasaki, Japan
| | - Tetsuji Yokoyama
- Department of Health and Promotion, National Institute of Public Health, Wako, Japan
| | - Tomonori Yano
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, Kashiwa, Japan
| | - Haruhisa Suzuki
- Endoscopy Division, National Cancer Center Hospital, Tokyo, Japan
| | - Yuichi Shimizu
- Department of Gastroenterology, Hokkaido University Graduate School of Medicine, Sapporo, Japan
| | - Yasuaki Furue
- Department of Gastroenterology, Kitasato University School of Medicine, Sagamihara, Japan
| | - Hiroyoshi Nakanishi
- Department of Gastroenterology, Ishikawa Prefectural Central Hospital, Kanazawa, Japan
| | - Tomoyuki Koike
- Division of Gastroenterology, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Kohei Takizawa
- Division of Endoscopy, Shizuoka Cancer Center, Shizuoka, Japan
- Department of Endoscopy, Koyukai Shin-Sapporo Hospital, Hokkaido, Japan
| | - Motohiro Hirao
- Department of Surgery, National Hospital Organization Osaka National Hospital, Osaka, Japan
| | - Takako Yoshii
- Department of Gastroenterology, Kanagawa Cancer Center, Yokohama, Japan
| | - Takenori Yamanouchi
- Department of Gastroenterology, Kumamoto Regional Medical Center, Kumamoto, Japan
| | - Hirofumi Kawakubo
- Department of Surgery, Kawasaki Municipal Kawasaki Hospital, Kawasaki, Japan
| | - Nozomu Kobayashi
- Department of Gastroenterology, Tochigi Cancer Center, Utsunomiya, Japan
| | - Tadakazu Shimoda
- Division of Diagnostic Pathology, Shizuoka Cancer Center, Shizuoka, Japan
| | - Atsushi Ochiai
- Exploratory Oncology Research and Clinical Trial Center, National Cancer Center, Kashiwa, Japan
| | - Hideki Ishikawa
- Department of Molecular-Targeting Cancer Prevention, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Akira Yokoyama
- Clinical Research Unit, National Hospital Organization Kurihama Medical and Addiction Center, Yokosuka, Japan
| | - Manabu Muto
- Department of Therapeutic Oncology, Graduate School of Medicine, Kyoto University, 54 Kawaharacho Syhogoin Sakyo, Kyoto, 606-8507, Japan
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Sakurai A, Ohtsu A, Arai S, Aoki M, Ikeya M, Tokue H, Hori K, Fujizuka Y, Sekine Y, Koike H, Suzuki K. Successful embolization of subcutaneous mesenteric varices within an ileal conduit in a patient with liver cirrhosis. IJU Case Rep 2023; 6:445-448. [PMID: 37928295 PMCID: PMC10622204 DOI: 10.1002/iju5.12644] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2023] [Accepted: 09/12/2023] [Indexed: 11/07/2023] Open
Abstract
Introduction Venous hemorrhage from ectopic varices is potentially fatal. This report describes a rare case in which bleeding from mesenteric varices in an ileal conduit was treated successfully by embolization therapy. Case presentation The patient was an 82-year-old man who had previously undergone total pelvic exenteration for colon cancer with creation of an ileal conduit for urinary diversion. He subsequently developed liver cirrhosis and underwent partial hepatectomy for hepatocellular carcinoma. 9 years after his colon surgery, he was admitted with gross hematuria. Computed tomography revealed subcutaneous mesenteric varices in the ileal conduit and hemorrhage as a result of rupture of the varices. The bleeding continued despite repeated manual compression but was eventually stopped by embolization therapy. Conclusion Embolization therapy may be helpful for hemostasis in the event of intractable bleeding from mesenteric varices in an ileal conduit.
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Affiliation(s)
- Ayaka Sakurai
- Department of UrologyGunma University HospitalMaebashiGunmaJapan
| | - Akira Ohtsu
- Department of UrologyGunma University HospitalMaebashiGunmaJapan
| | - Seiji Arai
- Department of UrologyGunma University HospitalMaebashiGunmaJapan
| | - Masanori Aoki
- Department of UrologyGunma University HospitalMaebashiGunmaJapan
| | - Miho Ikeya
- Department of Diagnostic and Interventional RadiologyGunma University HospitalMaebashiGunmaJapan
| | - Hiroyuki Tokue
- Department of Diagnostic and Interventional RadiologyGunma University HospitalMaebashiGunmaJapan
| | - Keisuke Hori
- Department of UrologyGunma University HospitalMaebashiGunmaJapan
| | - Yuji Fujizuka
- Department of UrologyGunma University HospitalMaebashiGunmaJapan
| | - Yoshitaka Sekine
- Department of UrologyGunma University HospitalMaebashiGunmaJapan
| | - Hidekazu Koike
- Department of UrologyGunma University HospitalMaebashiGunmaJapan
| | - Kazuhiro Suzuki
- Department of UrologyGunma University HospitalMaebashiGunmaJapan
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Miyazawa Y, Hori K, Tsuji Y, Sekine Y, Arai S, Fujizuka Y, Nomura M, Koike H, Matsui H, Suzuki K. The utility of the [-2]pro-prostate-specific antigen level as a prognostic marker in patients with castration-resistant prostate cancer treated with enzalutamide. Int J Urol 2023; 30:839-846. [PMID: 37256915 DOI: 10.1111/iju.15212] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2023] [Accepted: 05/15/2023] [Indexed: 06/02/2023]
Abstract
BACKGROUND The prostate health index (phi) derived using [-2]pro-prostate-specific antigen (p2PSA), a precursor of PSA, has been shown to predict cancer in the gray zone. However, the utility of p2PSA in predicting outcomes for castration-resistant prostate cancer (CRPC) patients remains unknown. Therefore, in this study, we aimed to evaluate the usefulness of p2PSA in predicting the efficacy and prognosis of enzalutamide treatment in CRPC patients. METHODS We conducted a prospective study of CRPC patients treated with enzalutamide at our institution, measuring p2PSA levels in 98 pre-treatment serum samples. All patients were divided into two groups based on the median values of each parameter. The PSA progression-free survival (PSA-PFS) and overall survival (OS) were compared using the Kaplan-Meier method. This study was approved by the Institutional Review Board of Gunma University Hospital (IRB No. 2021-092, 1983). RESULTS The median PSA level before enzalutamide treatment was 25.59 ng/mL, the median p2PSA level was 208.75 pg/mL, and the median phi was 187.95. PSA, p2PSA, and phi were not all predictors of PSA-PFS. However, the OS was significantly better in the low-value groups (log-rank p-values of PSA, p2PSA, and phi were 0.024, 0.034, and 0.018, respectively). In the docetaxel (DOC)-naive group (n = 58), PSA was not a predictor of OS, but p2PSA and phi were significantly associated with better OS in the low group. This relationship was not observed in the DOC-treated group. CONCLUSIONS Our study elucidates the usefulness of p2PSA in predicting outcomes for CRPC patients treated with enzalutamide. It suggests that p2PSA and phi may be prognostic markers after enzalutamide administration in CRPC patients.
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Affiliation(s)
- Yoshiyuki Miyazawa
- Department of Urology, Gunma University Graduate School of Medicine & Gunma University Hospital, Maebashi, Japan
| | - Keisuke Hori
- Department of Urology, Gunma University Graduate School of Medicine & Gunma University Hospital, Maebashi, Japan
| | - Yusuke Tsuji
- Department of Urology, Gunma University Graduate School of Medicine & Gunma University Hospital, Maebashi, Japan
| | - Yoshitaka Sekine
- Department of Urology, Gunma University Graduate School of Medicine & Gunma University Hospital, Maebashi, Japan
| | - Seiji Arai
- Department of Urology, Gunma University Graduate School of Medicine & Gunma University Hospital, Maebashi, Japan
| | - Yuji Fujizuka
- Department of Urology, Gunma University Graduate School of Medicine & Gunma University Hospital, Maebashi, Japan
| | - Masashi Nomura
- Department of Urology, Gunma University Graduate School of Medicine & Gunma University Hospital, Maebashi, Japan
| | - Hidekazu Koike
- Department of Urology, Gunma University Graduate School of Medicine & Gunma University Hospital, Maebashi, Japan
| | - Hiroshi Matsui
- Department of Urology, Gunma University Graduate School of Medicine & Gunma University Hospital, Maebashi, Japan
| | - Kazuhiro Suzuki
- Department of Urology, Gunma University Graduate School of Medicine & Gunma University Hospital, Maebashi, Japan
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Takemoto S, Hori K, Yoshimasa S, Nishimura M, Nakajo K, Inaba A, Sasabe M, Aoyama N, Watanabe T, Minakata N, Ikematsu H, Yokota H, Yano T. Computer-aided demarcation of early gastric cancer: a pilot comparative study with endoscopists. J Gastroenterol 2023; 58:741-750. [PMID: 37256409 DOI: 10.1007/s00535-023-02001-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/08/2023] [Accepted: 05/04/2023] [Indexed: 06/01/2023]
Abstract
BACKGROUND Precise area diagnosis of early gastric cancer (EGC) is critical for reliable endoscopic resection. Computer-aided diagnosis (CAD) shows strong potential for detecting EGC and reducing cancer-care disparities caused by differences in endoscopists' skills. To be used in clinical practice, CAD should enable both the detection and the demarcation of lesions. This study proposes a scheme for the detection and delineation of EGC under white-light endoscopy and validates its performance using 1-year consecutive cases. METHODS Only 300 endoscopic images randomly selected from 68 consecutive cases were used for training a convolutional neural network. All cases were treated with endoscopic submucosal dissection, enabling the accumulation of a training dataset in which the extent of lesions was precisely determined. For validation, 462 cancer images and 396 normal images from 137 consecutive cases were used. From the validation results, 38 randomly selected images were compared with those delineated by six endoscopists. RESULTS Successful detections of EGC in 387 cancer images (83.8%) and the absence of lesions in 307 normal images (77.5%) were achieved. Positive and negative predictive values were 81.3% and 80.4%, respectively. Successful detection was achieved in 130 cases (94.9%). We achieved precise demarcation of EGC with a mean intersection over union of 66.5%, showing the extent of lesions with a smooth boundary; the results were comparable to those achieved by specialists. CONCLUSIONS Our scheme, validated using 1-year consecutive cases, shows potential for demarcating EGC. Its performance matched that of specialists; it might therefore be suitable for clinical use in the future.
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Affiliation(s)
- Satoko Takemoto
- Image Processing Research Team, Center for Advanced Photonics, RIKEN, 2-1 Hirosawa, Wako-shi, Saitama, 351-0198, Japan
| | - Keisuke Hori
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, Kashiwa, Japan
- Department of Internal Medicine, Tsuyama Chuo Hospital, Tsuyama, Japan
| | - Sakai Yoshimasa
- Image Processing Research Team, Center for Advanced Photonics, RIKEN, 2-1 Hirosawa, Wako-shi, Saitama, 351-0198, Japan
| | - Masaomi Nishimura
- Image Processing Research Team, Center for Advanced Photonics, RIKEN, 2-1 Hirosawa, Wako-shi, Saitama, 351-0198, Japan
| | - Keiichiro Nakajo
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, Kashiwa, Japan
- Division of Science and Technology for Endoscopy, Exploratory Oncology Research and Clinical Trial Center, National Cancer Center, Kashiwa, Japan
| | - Atsushi Inaba
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, Kashiwa, Japan
| | - Maasa Sasabe
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, Kashiwa, Japan
| | - Naoki Aoyama
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, Kashiwa, Japan
| | - Takashi Watanabe
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, Kashiwa, Japan
| | - Nobuhisa Minakata
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, Kashiwa, Japan
| | - Hiroaki Ikematsu
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, Kashiwa, Japan
- Division of Science and Technology for Endoscopy, Exploratory Oncology Research and Clinical Trial Center, National Cancer Center, Kashiwa, Japan
| | - Hideo Yokota
- Image Processing Research Team, Center for Advanced Photonics, RIKEN, 2-1 Hirosawa, Wako-shi, Saitama, 351-0198, Japan.
| | - Tomonori Yano
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, Kashiwa, Japan
- Division of Science and Technology for Endoscopy, Exploratory Oncology Research and Clinical Trial Center, National Cancer Center, Kashiwa, Japan
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Furue Y, Hori K, Tomioka T, Fujii S, Okano W, Shinozaki T, Kadota T, Yoda Y, Hayashi R, Yano T. Clinical outcome of endoscopic-assisted transoral surgery for superficial cancer of pharyngo-esophageal junction. Head Neck 2023. [PMID: 37350231 DOI: 10.1002/hed.27439] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2023] [Revised: 06/01/2023] [Accepted: 06/12/2023] [Indexed: 06/24/2023] Open
Abstract
BACKGROUND Endoscopic-assisted transoral surgery (TOS) for superficial cancer of the pharyngo-esophageal junction (PEJ) is risk of stricture, and therapeutic outcomes are unclear. This study aimed to evaluate clinical outcomes of endoscopic-assisted TOS for superficial PEJ cancers. METHODS We retrospectively compared clinical outcomes of endoscopic-assisted TOS for superficial PEJ cancers (group A) and of other sites in the hypopharynx (group B). RESULTS The group A comprised 12 lesions in 12 patients, and group B comprised 198 lesions in 146 patients. Group A and group B exhibited en bloc resection rates of 100% and 99%. Median operative times were 82 and 37 min (p < 0.001). The frequency of stricture and local recurrence in group A was significantly higher in group B (42% vs. 1%, p < 0.001; 25% vs. 6%, p = 0.036). All adverse events could be managed with conservative treatments. CONCLUSIONS Endoscopic-assisted TOS is not ideal for treating superficial PEJ cancers compared to other sites.
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Affiliation(s)
- Yasuaki Furue
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, Kashiwa, Japan
- Department of Gastroenterology, Kitasato University School of Medicine, Sagamihara, Japan
| | - Keisuke Hori
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, Kashiwa, Japan
- Department of Gastroenterology, Ichinomiyanishi Hospital, Ichinomiya, Japan
| | - Toshifumi Tomioka
- Department of Head and Neck Surgery, National Cancer Center Hospital East, Kashiwa, Japan
| | - Satoshi Fujii
- Division of Pathology, Exploratory Oncology Research and Clinical Trial Center, National Cancer Center, Kashiwa, Japan
- Department of Molecular Pathology, Yokohama City University Graduate School of Medicine, Yokohama, Japan
| | - Wataru Okano
- Department of Head and Neck Surgery, National Cancer Center Hospital East, Kashiwa, Japan
| | - Takeshi Shinozaki
- Department of Head and Neck Surgery, National Cancer Center Hospital East, Kashiwa, Japan
| | - Tomohiro Kadota
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, Kashiwa, Japan
| | - Yusuke Yoda
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, Kashiwa, Japan
- Department of Endoscopy, Saitama Cancer Center, Kitaadachi, Japan
| | - Ryuichi Hayashi
- Department of Head and Neck Surgery, National Cancer Center Hospital East, Kashiwa, Japan
| | - Tomonori Yano
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, Kashiwa, Japan
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Ohtsu A, Arai S, Fujizuka Y, Fukuda R, Hori K, Morimura Y, Kawahara R, Shiraishi T, Ogawa H, Miyazawa Y, Nomura M, Sekine Y, Koike H, Matsui H, Suzuki K. Retroperitoneal urothelial carcinoma arising after bladder diverticulectomy: a case report. BMC Urol 2023; 23:88. [PMID: 37165362 PMCID: PMC10173469 DOI: 10.1186/s12894-023-01266-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2022] [Accepted: 05/03/2023] [Indexed: 05/12/2023] Open
Abstract
BACKGROUND Urothelial carcinoma arises from the inner urothelial membrane of the renal pelvis, ureter, and bladder and often causes macrohematuria. Here, we report a rare case in which the patient developed non-symptomatic urothelial carcinoma anatomically outside the bladder wall 17 years after bladder diverticulectomy. CASE PRESENTATION An 82-year-old male patient previously underwent gastrectomy for stomach cancer and partial hepatectomy for intrahepatic cholangiocarcinoma. Follow-up computed tomography revealed a tumor in the retroperitoneal space, where a bladder diverticulum was removed 17 years earlier. Multiparametric magnetic resonance imaging suggested that the tumor was malignant with rectal invasion. Subsequent computed tomography-guided percutaneous biopsy revealed that the tumor was urothelial carcinoma. The patient underwent two courses of neoadjuvant chemotherapy followed by pelvic exenteration with pelvic lymph node dissection. He is currently receiving adjuvant therapy with an immune checkpoint inhibitor and has had no recurrence for 3 months. CONCLUSIONS Multiparametric magnetic resonance imaging is a helpful tool for predicting both tumor malignancy and invasion before a pathologically confirmed diagnosis. Although this case is rare, urologists should be aware of the occurrence of urothelial carcinoma after bladder diverticulectomy in cases of incomplete resection of the diverticulum.
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Affiliation(s)
- Akira Ohtsu
- Department of Urology, Gunma University Hospital, 3-39-15, Showa-Machi, Maebashi, Gunma, Japan
| | - Seiji Arai
- Department of Urology, Gunma University Hospital, 3-39-15, Showa-Machi, Maebashi, Gunma, Japan.
| | - Yuji Fujizuka
- Department of Urology, Gunma University Hospital, 3-39-15, Showa-Machi, Maebashi, Gunma, Japan
| | - Reon Fukuda
- Department of Urology, Gunma University Hospital, 3-39-15, Showa-Machi, Maebashi, Gunma, Japan
| | - Keisuke Hori
- Department of Urology, Gunma University Hospital, 3-39-15, Showa-Machi, Maebashi, Gunma, Japan
| | - Yuki Morimura
- Department of Urology, Gunma University Hospital, 3-39-15, Showa-Machi, Maebashi, Gunma, Japan
| | - Rintaro Kawahara
- Department of General Surgical Science, Graduate School of Medicine, Gunma University, 3-39-15, Showa-Machi, Maebashi, Gunma, Japan
| | - Takuya Shiraishi
- Department of General Surgical Science, Graduate School of Medicine, Gunma University, 3-39-15, Showa-Machi, Maebashi, Gunma, Japan
| | - Hiroomi Ogawa
- Department of General Surgical Science, Graduate School of Medicine, Gunma University, 3-39-15, Showa-Machi, Maebashi, Gunma, Japan
| | - Yoshiyuki Miyazawa
- Department of Urology, Gunma University Hospital, 3-39-15, Showa-Machi, Maebashi, Gunma, Japan
| | - Masashi Nomura
- Department of Urology, Gunma University Hospital, 3-39-15, Showa-Machi, Maebashi, Gunma, Japan
| | - Yoshitaka Sekine
- Department of Urology, Gunma University Hospital, 3-39-15, Showa-Machi, Maebashi, Gunma, Japan
| | - Hidekazu Koike
- Department of Urology, Gunma University Hospital, 3-39-15, Showa-Machi, Maebashi, Gunma, Japan
| | - Hiroshi Matsui
- Department of Urology, Gunma University Hospital, 3-39-15, Showa-Machi, Maebashi, Gunma, Japan
| | - Kazuhiro Suzuki
- Department of Urology, Gunma University Hospital, 3-39-15, Showa-Machi, Maebashi, Gunma, Japan
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Hori K, Nilsson A, Tobias SM. Waves in planetary dynamos. Rev Mod Plasma Phys 2023; 7:5. [PMID: 36588584 PMCID: PMC9792417 DOI: 10.1007/s41614-022-00104-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/30/2022] [Accepted: 11/04/2022] [Indexed: 12/27/2022]
Abstract
This Special Topic focuses on magnetohydrodynamic (MHD) processes in the deep interiors of planets, in which their fluid dynamos are in operation. The dynamo-generated, global, magnetic fields provide a background for our solar-terrestrial environment. Probing the processes within the dynamos is a significant theoretical and computational challenge and any window into interior dynamics greatly increases our understanding. Such a window is provided by exploring rapid dynamics, particularly MHD waves about the dynamo-defined basic state. This field is the subject of current attention as geophysical observations and numerical modellings advance. We here pay particular attention to torsional Alfvén waves/oscillations and magnetic Rossby waves, which may be regarded as typical axisymmetric and nonaxisymmetric modes, respectively, amongst a wide variety of wave classes of rapidly rotating MHD fluids. The excitation of those waves has been evidenced for the Earth - whilst their presence has also been suggested for Jupiter. We shall overview their dynamics, summarise our current understanding, and give open questions for future perspectives.
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Affiliation(s)
- K. Hori
- Graduate School of System Informatics, Kobe University, Rokkodai 1-1, Nada, Kobe, 657-8501 Japan
| | - A. Nilsson
- Department of Geology, Lund University, Sölvegatan 12, Lund, 22362 Sweden
| | - S. M. Tobias
- Department of Applied Mathematics, University of Leeds, Woodhouse Lane, Leeds, LS2 9JT UK
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Hori S, Hori K, Yoshimura S, Uehara F, Sato N, Hasegawa Y, Akazawa K, Ono T. Masticatory Behavior Change with a Wearable Chewing Counter: A Randomized Controlled Trial. J Dent Res 2023; 102:21-27. [PMID: 36085580 DOI: 10.1177/00220345221118013] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Because a relationship has been reported between masticatory behavior, obesity, and postprandial blood glucose, it is recommended to chew well and take a longer time to eat. The purpose of this study was to examine the possibility of changing masticatory behavior using a small ear-hung wearable chewing counter, which can monitor masticatory behavior without disturbing daily meals. In total, 235 healthy volunteers participated in a 4-wk randomized controlled trial and were divided into 3 groups. All participants were instructed about the importance of mastication at the first visit. During the intervention, group B used the chewing counter without an algorithm during each meal (notification of the number of chews after meal), and group C used the chewing counter with a masticatory behavior change algorithm (setting a target value and displaying the number of chews in real time). Group A was set as the control group. The number of chews and the meal time when consuming 1 rice ball (100 g) were measured before and after the intervention using the chewing counter, and the rate of change in these values was evaluated. Participants also provided a subjective evaluation of their changes in masticatory behavior. The number of chews and the meal time of 1 rice ball increased significantly in groups B and C compared with before the intervention, and the rate of change was significantly higher in group C than in group A and group B. In addition, the subjective evaluation of the change in the number of chews was highest in group C. Self-monitoring of masticatory behavior by providing a target value and the degree of achievement for the number of chews using a wearable chewing counter with a behavioral change algorithm could promote effective change in masticatory behavior and lead to an increased number of chews. (Trial ID: UMIN000034476).
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Affiliation(s)
- S Hori
- Division of Comprehensive Prosthodontics, Faculty of Dentistry and Graduate School of Medical and Dental Sciences, Niigata University, Niigata, Japan
| | - K Hori
- Division of Comprehensive Prosthodontics, Faculty of Dentistry and Graduate School of Medical and Dental Sciences, Niigata University, Niigata, Japan
| | - S Yoshimura
- Division of Comprehensive Prosthodontics, Faculty of Dentistry and Graduate School of Medical and Dental Sciences, Niigata University, Niigata, Japan
| | - F Uehara
- Division of Comprehensive Prosthodontics, Faculty of Dentistry and Graduate School of Medical and Dental Sciences, Niigata University, Niigata, Japan
| | - N Sato
- Division of Comprehensive Prosthodontics, Faculty of Dentistry and Graduate School of Medical and Dental Sciences, Niigata University, Niigata, Japan
| | - Y Hasegawa
- Division of Comprehensive Prosthodontics, Faculty of Dentistry and Graduate School of Medical and Dental Sciences, Niigata University, Niigata, Japan
| | - K Akazawa
- Department of Medical Informatics, Niigata University Medical and Dental Hospital, Japan
| | - T Ono
- Division of Comprehensive Prosthodontics, Faculty of Dentistry and Graduate School of Medical and Dental Sciences, Niigata University, Niigata, Japan
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Weikum J, Kulakova A, Tesei G, Yoshimoto S, Vejby Jægerum L, Schütz M, Hori K, Skepö M, Harris P, Leo J, Morth J. The extracellular juncture domains of Type 5 autotransporters. Acta Cryst Sect A 2022. [DOI: 10.1107/s2053273322096656] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/19/2023]
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10
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Hori K, Ikematsu H, Yamamoto Y, Matsuzaki H, Takeshita N, Shinmura K, Yoda Y, Kiuchi T, Takemoto S, Yokota H, Yano T. Detecting colon polyps in endoscopic images using artificial intelligence constructed with automated collection of annotated images from an endoscopy reporting system. Dig Endosc 2022; 34:1021-1029. [PMID: 34748658 DOI: 10.1111/den.14185] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/02/2021] [Revised: 11/02/2021] [Accepted: 11/05/2021] [Indexed: 12/28/2022]
Abstract
BACKGROUND Artificial intelligence (AI) has made considerable progress in image recognition, especially in the analysis of endoscopic images. The availability of large-scale annotated datasets has contributed to the recent progress in this field. Datasets of high-quality annotated endoscopic images are widely available, particularly in Japan. A system for collecting annotated data reported daily could aid in accumulating a significant number of high-quality annotated datasets. AIM We assessed the validity of using daily annotated endoscopic images in a constructed reporting system for a prototype AI model for polyp detection. METHODS We constructed an automated collection system for daily annotated datasets from an endoscopy reporting system. The key images were selected and annotated for each case only during daily practice, not to be performed retrospectively. We automatically extracted annotated endoscopic images of diminutive colon polyps that had been diagnosed (study period March-September 2018) using the keywords of diagnostic information, and additionally collect the normal colon images. The collected dataset was devised into training and validation to build and evaluate the AI system. The detection model was developed using a deep learning algorithm, RetinaNet. RESULTS The automated system collected endoscopic images (47,391) from colonoscopies (745), and extracted key colon polyp images (1356) with localized annotations. The sensitivity, specificity, and accuracy of our AI model were 97.0%, 97.7%, and 97.3% (n = 300), respectively. CONCLUSION The automated system enabled the development of a high-performance colon polyp detector using images in endoscopy reporting system without the efforts of retrospective annotation works.
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Affiliation(s)
- Keisuke Hori
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, Chiba, Japan.,Division of Science and Technology for Endoscopy, Exploratory Oncology Research & Clinical Trial Center, National Cancer Center Hospital East, Chiba, Japan
| | - Hiroaki Ikematsu
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, Chiba, Japan.,Division of Science and Technology for Endoscopy, Exploratory Oncology Research & Clinical Trial Center, National Cancer Center Hospital East, Chiba, Japan
| | - Yoichi Yamamoto
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, Chiba, Japan
| | - Hiroki Matsuzaki
- Medical Device Innovation Center, National Cancer Center Hospital East, Chiba, Japan
| | - Nobuyoshi Takeshita
- Medical Device Innovation Center, National Cancer Center Hospital East, Chiba, Japan
| | - Kensuke Shinmura
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, Chiba, Japan
| | - Yusuke Yoda
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, Chiba, Japan.,Medical Device Innovation Center, National Cancer Center Hospital East, Chiba, Japan
| | - Takayoshi Kiuchi
- System Engineering Division, FUJIFILM Medical IT Solutions Co., Ltd., Tokyo, Japan
| | - Satoko Takemoto
- Image Processing Research Team, RIKEN Center for Advanced Photonics, Saitama, Japan
| | - Hideo Yokota
- Image Processing Research Team, RIKEN Center for Advanced Photonics, Saitama, Japan.,Advanced Data Science Project, RIKEN Information R&D and Strategy Headquarters, Saitama, Japan
| | - Tomonori Yano
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, Chiba, Japan.,Medical Device Innovation Center, National Cancer Center Hospital East, Chiba, Japan
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11
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Shinmura K, Yamamoto Y, Inaba A, Okumura K, Nishihara K, Kumahara K, Sunakawa H, Furue Y, Ito R, Sato D, Minamide T, Suyama M, Takashima K, Nakajo K, Murano T, Kadota T, Yoda Y, Hori K, Oono Y, Ikematsu H, Yano T. The safety and feasibility of endoscopic submucosal dissection using a flexible three-dimensional endoscope for early gastric cancer and superficial esophageal cancer: A prospective observational study. J Gastroenterol Hepatol 2022; 37:749-757. [PMID: 35080040 DOI: 10.1111/jgh.15784] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/31/2021] [Revised: 12/26/2021] [Accepted: 01/05/2022] [Indexed: 12/09/2022]
Abstract
BACKGROUND AND AIM Endoscopic submucosal dissection (ESD) is performed as one of standard treatments for patients with early gastric cancer (EGC) and superficial esophageal squamous cancer (SESCC). A prototype of a flexible endoscope with a 3-D system has been recently developed. This study aimed to investigate the safety and feasibility of ESD using a 3-D flexible endoscope (3-D ESD) for EGC and SESCC. METHODS This single-center, prospective, observational study enrolled patients who underwent planned 3-D ESD. The clinical outcomes, including the incidence of adverse events and treatment results, were analyzed. Visibility and manipulation during 3-D ESD were evaluated using a visual analog scale (VAS). We also evaluated the effect of the 3-D system on the endoscopist using VAS and the critical flicker fusion frequency (CFFF). RESULTS We analyzed 47 EGC and 20 SESCC cases. There are no bleeding cases that required transfusion and perforation during 3-D ESD in both EGC and SESCC patients. However, the incidence of delayed bleeding and delayed perforation was 1.5% (one case) each. The mean VAS scores for recognizing the submucosal layer during the submucosal dissection, visual perception of blood vessel, and depth perception were 72.7 ± 22.2, 74.7 ± 21.8, and 78.2 ± 19.9, respectively. In contrast, the mean VAS score for manipulation was 25.4 ± 19.7. Among endoscopists, there was no significant difference in the VAS of eyestrain and headache before and after ESD, and there was no significant difference in the CFFF. CONCLUSION The safety and feasibility of 3-D ESD for EGC and SESCC are acceptable in both patients and endoscopists.
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Affiliation(s)
- Kensuke Shinmura
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, Kashiwa, Japan
| | - Yoichi Yamamoto
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, Kashiwa, Japan
| | - Atsushi Inaba
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, Kashiwa, Japan
| | - Kei Okumura
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, Kashiwa, Japan
| | - Keiichiro Nishihara
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, Kashiwa, Japan
| | - Kana Kumahara
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, Kashiwa, Japan
| | - Hironori Sunakawa
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, Kashiwa, Japan
| | - Yasuaki Furue
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, Kashiwa, Japan
| | - Renma Ito
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, Kashiwa, Japan
| | - Daiki Sato
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, Kashiwa, Japan
| | - Tatsunori Minamide
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, Kashiwa, Japan
| | - Masayuki Suyama
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, Kashiwa, Japan
| | - Kenji Takashima
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, Kashiwa, Japan
| | - Keiichiro Nakajo
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, Kashiwa, Japan
| | - Tatsuro Murano
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, Kashiwa, Japan
| | - Tomohiro Kadota
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, Kashiwa, Japan
| | - Yusuke Yoda
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, Kashiwa, Japan
| | - Keisuke Hori
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, Kashiwa, Japan
| | - Yasuhiro Oono
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, Kashiwa, Japan
| | - Hiroaki Ikematsu
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, Kashiwa, Japan
| | - Tomonori Yano
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, Kashiwa, Japan
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12
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Iwamuro M, Abe M, Kono Y, Kanzaki H, Hori K, Kawano S, Kawahara Y, Okada H. [Clinical characteristics of five patients with gastric emphysema]. Nihon Shokakibyo Gakkai Zasshi 2021; 118:851-858. [PMID: 34511552 DOI: 10.11405/nisshoshi.118.851] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Gastric emphysema is a rare condition in which gas from a nonbacterial source accumulates within the gastric wall. In this study, we retrospectively analyzed the cases of five patients who were diagnosed with gastric emphysema at the Okayama University Hospital between January 2010 and April 2021, to reveal the clinical features of the disease. Based on their reviews, we revealed that:i) gastric emphysema occurred in hospitalized bedridden patients (n=5), such as those during/after endotracheal intubation (n=3), those undergoing gastric tube placement (n=3), those undergoing percutaneous endoscopic gastrostomy (n=1), and those undergoing treatment for cerebral infarction (n=1);ii) gastric emphysema was accompanied by the accumulation of gas in the portal (n=4) or gastric veins (n=1);iii) gastric emphysema was accompanied by colon wall thickness increase (n=4);iv) esophagogastroduodenoscopy showed redness, erosions, coarse mucosa, and/or ulcers (n=5);v) a clear boundary between the damaged area and the intact mucosa was observed (n=5);vi) the anterior wall of the stomach was less affected (n=4);vii) mucosal damage was predominant in the gastric folds, whereas the furrow of the mucosa was less affected;and viii) treatment with enteral nutrition suspension and the administration of proton pump inhibitors and antibiotics resulted in the recovery of patients from gastric emphysema (n=5). These results indicate that patients with gastric emphysema have distinct clinical, endoscopic, and radiological features. Furthermore, our results show that these patients can be conservatively managed.
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Affiliation(s)
- Masaya Iwamuro
- Department of Gastroenterology and Hepatology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
| | - Makoto Abe
- Department of General Medicine, Kasaoka Division, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
| | - Yoshiyasu Kono
- Department of Gastroenterology and Hepatology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
| | - Hiromitsu Kanzaki
- Department of Gastroenterology and Hepatology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
| | - Keisuke Hori
- Department of Gastroenterology and Hepatology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
| | - Seiji Kawano
- Department of Gastroenterology and Hepatology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
| | - Yoshiro Kawahara
- Department of Practical Gastrointestinal Endoscopy, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
| | - Hiroyuki Okada
- Department of Gastroenterology and Hepatology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
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13
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Tanabe S, Kojima T, Tazawa H, Noma K, Katsui K, Hori K, Nakamura N, Urata Y, Doi T, Kanazawa S, Shirakawa Y, Fujiwara T, Okada H. 554P Phase I clinical trial of OBP-301, a novel telomerase-specific oncolytic virus, in combination with radiotherapy in esophageal cancer patients. Ann Oncol 2021. [DOI: 10.1016/j.annonc.2021.08.1076] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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14
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Uraoka T, Tanaka S, Saito Y, Matsumoto T, Kuribayashi S, Hori K, Tajiri H. Computer-assisted detection of diminutive and small colon polyps by colonoscopy using an extra-wide-area-view colonoscope. Endoscopy 2021; 53:E102-E103. [PMID: 32659811 DOI: 10.1055/a-1202-1277] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Toshio Uraoka
- Department of Gastroenterology and Hepatology, Gunma University Graduate School of Medicine, Maebashi, Japan
| | - Shinji Tanaka
- Department of Endoscopy, Hiroshima University Hospital, Hiroshima, Japan
| | - Yutaka Saito
- Endoscopy Division, National Cancer Center Hospital, Tokyo, Japan
| | - Takayuki Matsumoto
- Division of Gastroenterology, Department of Medicine, Iwate Medical University, Morioka, Japan
| | - Shiko Kuribayashi
- Department of Gastroenterology and Hepatology, Gunma University Graduate School of Medicine, Maebashi, Japan
| | - Keisuke Hori
- Department of Internal Medicine, Tsuyama Central Hospital, Okayama, Japan
| | - Hisao Tajiri
- Department of Innovative Interventional Endoscopy Research, The Jikei University School of Medicine, Tokyo, Japan
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15
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Ito R, Ikematsu H, Murano T, Shinmura K, Kojima M, Kumahara K, Furue Y, Sunakawa H, Minamide T, Sato D, Yamamoto Y, Takashima K, Yoda Y, Hori K, Yano T. Diagnostic ability of Japan Narrow-Band Imaging Expert Team classification for colorectal lesions by magnifying endoscopy with blue laser imaging versus narrow-band imaging. Endosc Int Open 2021; 9:E271-E277. [PMID: 33553592 PMCID: PMC7857969 DOI: 10.1055/a-1324-3083] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/28/2020] [Accepted: 10/19/2020] [Indexed: 02/06/2023] Open
Abstract
Background and study aims The Japan Narrow-band imaging (NBI) Expert Team (JNET) classification was proposed for evaluating colorectal lesions. However, it remains unknown whether the JNET classification can be applied to magnifying endoscopy with image-enhanced endoscopies other than NBI. This study aimed to compare the diagnostic ability of JNET classification by magnifying endoscopy with blue laser imaging (ME-BLI) and with ME-NBI. Patients and methods We retrospectively assessed consecutive patients diagnosed per the JNET classification by ME-BLI (BLI group) or ME-NBI (NBI group) between March 2014 and June 2017. We compared the diagnostic value of JNET classification between the groups with one-to-one propensity score matching. Results Four hundred and seventy-one propensity score-matched pairs of lesions were analyzed. In the BLI and NBI groups, the overall diagnostic accuracies were 92.1 % and 91.7 %, respectively, and those for differentiating between neoplastic and non-neoplastic polyps were 96.6 % and 96.8 %, respectively. The positive predictive value by each JNET classification in BLI vs. NBI group was 90.6 % vs. 96.2 % in Type 1, 94.3 % vs. 94.6 % in Type 2A, 57.7 % vs. 42.3 % in Type 2B, and 100 % vs. 91.7 % in Type 3. The negative predictive value was 97.0 % vs. 96.9 % in Type 1, 88.1 % vs. 82.8 % in Type 2A, 98.0 % vs. 98.2 % in Type 2B, and 98.5 % vs. 98.7 % in Type 3. No statistical difference in the diagnostic results was found between the groups. Conclusions The diagnostic ability of the JNET classification by ME-BLI and ME-NBI was comparable, with the former also applicable for diagnosis of colorectal lesions.
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Affiliation(s)
- Renma Ito
- Department of Gastroenterology and Endoscopy
| | | | | | | | | | | | | | | | | | - Daiki Sato
- Department of Gastroenterology and Endoscopy
| | | | | | - Yusuke Yoda
- Department of Gastroenterology and Endoscopy
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16
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Nishihara K, Hori K, Saito T, Omori T, Sunakawa H, Minamide T, Suyama M, Yamamoto Y, Yoda Y, Shinmura K, Ikematsu H, Yano T. A study of evaluating specific tissue oxygen saturation values of gastrointestinal tumors by removing adherent substances in oxygen saturation imaging. PLoS One 2021; 16:e0243165. [PMID: 33411775 PMCID: PMC7790263 DOI: 10.1371/journal.pone.0243165] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2020] [Accepted: 11/16/2020] [Indexed: 11/19/2022] Open
Abstract
OBJECTIVES Oxygen saturation (OS) imaging is a new method of endoscopic imaging that has clinical applications in oncology which can directly measure tissue oxygen saturation (Sto2) of the surface of gastrointestinal tract without any additional drugs or devices. This imaging technology is expected to contribute to research into cancer biology which leads to clinical benefit such as prediction to efficacy of chemotherapy or radiotherapy. However, adherent substances on tumors such as blood and white coating, pose a challenge for accurate measurements of the StO2 values in tumors. The aim of this study was to develop algorithms for discriminating between the tumors and their adherent substances, and to investigate whether it is possible to evaluate the tumor specific StO2 values excluding adherent substances during OS imaging. METHODS We plotted areas of tumors and their adherent substances using white-light images of 50 upper digestive tumors: blood (68 plots); reddish tumor (83 plots); white coating (89 plots); and whitish tumor (79 plots). Scatter diagrams and discriminating algorithms using spectrum signal intensity values were constructed and verified using validation datasets. StO2 values were compared between the tumors and tumor adherent substances using OS images of gastrointestinal tumors. RESULTS The discriminating algorithms and their accuracy rates (AR) were as follows: blood vs. reddish tumor: Y> - 4.90X+7.13 (AR: 95.9%) and white coating vs. whitish tumor: Y< -0.52X+0.17 (AR: 96.0%). The StO2 values (median, [range]) were as follows: blood, 79.3% [37.8%-100.0%]; reddish tumor, 74.5% [62.0%-86.9%]; white coating, 73.8% [42.1%-100.0%]; and whitish tumor, 65.7% [53.0%-76.3%]. CONCLUSIONS OS imaging is strongly influenced by adherent substances for evaluating the specific StO2 value of tumors; therefore, it is important to eliminate the information of adherent substances for clinical application of OS imaging.
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Affiliation(s)
- Keiichiro Nishihara
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital, Kashiwanoha, Kashiwa, Japan
| | - Keisuke Hori
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital, Kashiwanoha, Kashiwa, Japan
| | - Takaaki Saito
- Imaging Technology Center, FUJIFILM Corporation, Tokyo, Japan
| | - Toshihiko Omori
- Medical Systems Research & Development Center, Research & Development, Management Headquarters, FUJIFILM Corporation, Tokyo Japan
| | - Hironori Sunakawa
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital, Kashiwanoha, Kashiwa, Japan
| | - Tatsunori Minamide
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital, Kashiwanoha, Kashiwa, Japan
| | - Masayuki Suyama
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital, Kashiwanoha, Kashiwa, Japan
| | - Yoichi Yamamoto
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital, Kashiwanoha, Kashiwa, Japan
| | - Yusuke Yoda
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital, Kashiwanoha, Kashiwa, Japan
| | - Kensuke Shinmura
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital, Kashiwanoha, Kashiwa, Japan
| | - Hiroaki Ikematsu
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital, Kashiwanoha, Kashiwa, Japan
| | - Tomonori Yano
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital, Kashiwanoha, Kashiwa, Japan
- * E-mail:
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17
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Kadota T, Yoda Y, Hori K, Shinmura K, Oono Y, Ikematsu H, Yano T. Prophylactic steroid administration against strictures is not enough for mucosal defects involving the entire circumference of the esophageal lumen after esophageal endoscopic submucosal dissection (ESD). Esophagus 2020; 17:440-447. [PMID: 32172461 DOI: 10.1007/s10388-020-00730-z] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/16/2019] [Accepted: 03/03/2020] [Indexed: 02/08/2023]
Abstract
BACKGROUNDS The width of mucosal defects after endoscopic submucosal dissection (ESD) of esophageal squamous cell carcinoma (ESCC) is known to be a risk factor for esophageal strictures. Although steroid injection and oral steroid have recently been reported as prophylactic treatments, these were shown to be ineffective in a subset of patients with post-ESD mucosal defects involving the entire circumference of the esophagus. The aim of this study was to demonstrate outcome with prophylactic steroid administration for post-ESD mucosal defects involving the entire circumference, and to explore risk factors for esophageal strictures except for circumference of the esophagus. METHODS Between November 2012 and August 2018, we enrolled patients with post-ESD mucosal defects involving the entire circumference of the esophagus who had received steroid injection (triamcinolone acetonide 50-100 mg, given immediately after ESD) followed by oral steroid (prednisolone 30 mg/day, tapered gradually over 8 weeks) as prophylactic treatment. Esophageal stricture was defined as case where ordinary-sized endoscope could not pass through post-ESD site, thus requiring endoscopic balloon dilation (EBD) repeatedly until relief of stricture was achieved. We retrospectively evaluated the rates of strictures, refractory strictures (requiring ≥ 6 EBD procedures) and unimproved strictures (not improvable by repeated EBD alone) and explored risk factors for strictures. RESULTS A total of 26 patients met the including criteria. The rates of strictures, refractory strictures, and unimproved strictures were 62%, 38%, and 12%, respectively. The pre-ESD longitudinal extension of the lesion > 5 cm was identified as a risk factor for refractory strictures, suggesting that lesions with this factor had a shorter time to stricture development, required more EBD procedures, and longer EBD durations. CONCLUSION Although additional study is required in a larger number of patients, careful consideration needs to be given to ESD as an indication for large spreading ESCC involving the entire circumference of esophagus given its high stricture risk.
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Affiliation(s)
- Tomohiro Kadota
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, 6-5-1, Kashiwanoha, Kashiwa, Chiba, 277-8577, Japan.
| | - Yusuke Yoda
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, 6-5-1, Kashiwanoha, Kashiwa, Chiba, 277-8577, Japan
| | - Keisuke Hori
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, 6-5-1, Kashiwanoha, Kashiwa, Chiba, 277-8577, Japan
| | - Kensuke Shinmura
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, 6-5-1, Kashiwanoha, Kashiwa, Chiba, 277-8577, Japan
| | - Yasuhiro Oono
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, 6-5-1, Kashiwanoha, Kashiwa, Chiba, 277-8577, Japan
| | - Hiroaki Ikematsu
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, 6-5-1, Kashiwanoha, Kashiwa, Chiba, 277-8577, Japan
| | - Tomonori Yano
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, 6-5-1, Kashiwanoha, Kashiwa, Chiba, 277-8577, Japan
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18
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Suyama M, Yoda Y, Yamamoto Y, Sunakawa H, Minamide T, Hori K, Ikematsu H, Yano T. Oxygen saturation imaging as a useful tool for visualizing the mode of action of photodynamic therapy for esophageal cancer. VideoGIE 2020; 5:496-499. [PMID: 33103009 PMCID: PMC7572618 DOI: 10.1016/j.vgie.2020.07.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/02/2022] Open
Abstract
Background and aims Oxygen saturation (OS) imaging is a novel technique that directly measures and visualizes the tissue oxygen saturation at the surface of the GI tract. Our purpose was to evaluate the ability of OS imaging to visualize the action mode of photodynamic therapy (PDT). Methods Eight patients with local recurrence after chemoradiotherapy for esophageal cancer were enrolled. OS imaging observation was performed before PDT, after 100 J/cm2 illumination and illumination completion, and on the second day. Results OS imaging showed an extreme change in the hypoxic state in the illuminated area, although the change was near invisible on white-light imaging. The median tissue oxygen saturation value at the tumor lesion was 61.5% (range, 36%-91%) before PDT and significantly decreased immediately after illumination: 11% (range, 0%-57%) after 100 J/cm2 illumination, 1% (range, 0%-6%) at PDT completion, and 2% (range, 0%-12%) on the second day. Conclusions OS imaging could be a useful tool to visualize changes after PDT.
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Ito K, Nakagawa M, Hori K, Tashima L, Goto M, Yanagida S, Suzuki J, Kaya R, Kawabata A, Park J, Nasu H, Nishio S, Kondo E, Kaneda M, Tsubamoto H, Arakawa A, Nagasawa T, Yamada K. 834P A phase II study of gemcitabine, cisplatin, and bevacizumab for first recurrent and refractory ovarian clear-cell carcinoma (KCOG-G1601 trial). Ann Oncol 2020. [DOI: 10.1016/j.annonc.2020.08.973] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
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20
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Murano T, Ikematsu H, Shinmura K, Ito R, Minamide T, Sato D, Yamamoto Y, Takashima K, Kadota T, Yoda Y, Hori K, Oono Y, Yano T. Endoscopic prediction of advanced histology in colorectal lesions sized <10 mm using the Japan Narrow-band imaging Expert Team classification. Dig Endosc 2020; 32:785-790. [PMID: 31630442 DOI: 10.1111/den.13566] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/07/2019] [Accepted: 10/15/2019] [Indexed: 12/15/2022]
Abstract
BACKGROUND AND AIM Endoscopic diagnosis of advanced histology in colorectal lesions sized <10 mm is essential for appropriate selection of resection methods. The Japan Narrow-band imaging Expert Team (JNET) classification has been recently validated for the evaluation of colorectal lesions. Our objective was to investigate the diagnostic value of the JNET classification for advanced histology in colorectal lesions sized <10 mm. METHODS We enrolled 680 patients with 1472 colorectal lesions sized <10 mm diagnosed according to the JNET classification and who subsequently underwent endoscopic or surgical resection between January and December 2017. We retrospectively examined the relationship between the JNET findings and pathological histology. Multivariate analysis was carried out to assess the predictive power of the JNET findings and clinical characteristics of lesions. RESULTS Advanced histology was present in 29 (2.0%) lesions. Advanced histology was absent in 68 lesions diagnosed as JNET type 1, whereas 1389 lesions diagnosed as JNET type 2A included 19 lesions of advanced histology (1.4%) with high-grade dysplasia alone. Eleven lesions diagnosed as JNET type 2B comprised eight lesions of advanced histology (72.7%) with four high-grade dysplasia and four submucosal invasive cancer, and two lesions diagnosed as JNET type 3 were submucosal invasive cancer. Multivariate analysis showed that JNET type 2B + 3 was a stronger predictive factor for advanced histology than other clinical risk factors. CONCLUSION Narrow-band imaging with magnification according to the JNET classification may be a useful modality for identification of advanced histology in colorectal lesions sized <10 mm.
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Affiliation(s)
- Tatsuro Murano
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, Chiba, Japan
| | - Hiroaki Ikematsu
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, Chiba, Japan
| | - Kensuke Shinmura
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, Chiba, Japan
| | - Renma Ito
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, Chiba, Japan
| | - Tatsunori Minamide
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, Chiba, Japan
| | - Daiki Sato
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, Chiba, Japan
| | - Yoichi Yamamoto
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, Chiba, Japan
| | - Kenji Takashima
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, Chiba, Japan
| | - Tomohiro Kadota
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, Chiba, Japan
| | - Yusuke Yoda
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, Chiba, Japan
| | - Keisuke Hori
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, Chiba, Japan
| | - Yasuhiro Oono
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, Chiba, Japan
| | - Tomonori Yano
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, Chiba, Japan
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21
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Inaba A, Hori K, Yoda Y, Ikematsu H, Takano H, Matsuzaki H, Watanabe Y, Takeshita N, Tomioka T, Ishii G, Fujii S, Hayashi R, Yano T. Artificial intelligence system for detecting superficial laryngopharyngeal cancer with high efficiency of deep learning. Head Neck 2020; 42:2581-2592. [PMID: 32542892 DOI: 10.1002/hed.26313] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2019] [Revised: 04/18/2020] [Accepted: 05/15/2020] [Indexed: 12/29/2022] Open
Abstract
BACKGROUND There are no published reports evaluating the ability of artificial intelligence (AI) in the endoscopic diagnosis of superficial laryngopharyngeal cancer (SLPC). We presented our newly developed diagnostic AI model for SLPC detection. METHODS We used RetinaNet for object detection. SLPC and normal laryngopharyngeal mucosal images obtained from narrow-band imaging were used for the learning and validation data sets. Each independent data set comprised 400 SLPC and 800 normal mucosal images. The diagnostic AI model was constructed stage-wise and evaluated at each learning stage using validation data sets. RESULTS In the validation data sets (100 SLPC cases), the median tumor size was 13.2 mm; flat/elevated/depressed types were found in 77/21/2 cases. Sensitivity, specificity, and accuracy improved each time a learning image was added and were 95.5%, 98.4%, and 97.3%, respectively, after learning all SLPC and normal mucosal images. CONCLUSIONS The novel AI model is helpful for detection of laryngopharyngeal cancer at an early stage.
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Affiliation(s)
- Atsushi Inaba
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, Kashiwa, Chiba, Japan.,Course of Advanced Clinical Research of Cancer, Juntendo University Graduate School of Medicine, Bunkyo-ku, Tokyo, Japan
| | - Keisuke Hori
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, Kashiwa, Chiba, Japan
| | - Yusuke Yoda
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, Kashiwa, Chiba, Japan.,Medical Device Innovation Center, National Cancer Center Hospital East, Kashiwa, Chiba, Japan
| | - Hiroaki Ikematsu
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, Kashiwa, Chiba, Japan.,Division of Science and Technology for Endoscopy, Exploratory Oncology Research & Clinical Trial Center, National Cancer Center East, Kashiwa, Chiba, Japan
| | - Hiroaki Takano
- Medical Device Innovation Center, National Cancer Center Hospital East, Kashiwa, Chiba, Japan
| | - Hiroki Matsuzaki
- Medical Device Innovation Center, National Cancer Center Hospital East, Kashiwa, Chiba, Japan
| | - Yoshiki Watanabe
- Department of Medical Information, National Cancer Center Hospital East, Kashiwa, Chiba, Japan
| | - Nobuyoshi Takeshita
- Medical Device Innovation Center, National Cancer Center Hospital East, Kashiwa, Chiba, Japan
| | - Toshifumi Tomioka
- Department of Head and Neck Surgery, National Cancer Center Hospital East, Kashiwa, Chiba, Japan
| | - Genichiro Ishii
- Course of Advanced Clinical Research of Cancer, Juntendo University Graduate School of Medicine, Bunkyo-ku, Tokyo, Japan.,Division of Pathology, Exploratory Oncology Research & Clinical Trial Center, National Cancer Center East, Kashiwa, Chiba, Japan
| | - Satoshi Fujii
- Division of Pathology, Exploratory Oncology Research & Clinical Trial Center, National Cancer Center East, Kashiwa, Chiba, Japan
| | - Ryuichi Hayashi
- Department of Head and Neck Surgery, National Cancer Center Hospital East, Kashiwa, Chiba, Japan
| | - Tomonori Yano
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, Kashiwa, Chiba, Japan.,Medical Device Innovation Center, National Cancer Center Hospital East, Kashiwa, Chiba, Japan
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22
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Hanada N, Kohase Y, Hori K, Sugime H, Noda S. Electrolysis of ammonia in aqueous solution by platinum nanoparticles supported on carbon nanotube film electrode. Electrochim Acta 2020. [DOI: 10.1016/j.electacta.2020.136027] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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23
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Katada C, Yokoyama T, Yano T, Oda I, Shimizu Y, Doyama H, Koike T, Takizawa K, Hirao M, Okada H, Yoshii T, Kubota Y, Yamanouchi T, Tsuda T, Omori T, Kobayashi N, Suzuki H, Tanabe S, Hori K, Nakayama N, Kawakubo H, Kakushima N, Matsuo Y, Ishikawa H, Yokoyama A, Muto M. Association between macrocytosis and metachronous squamous cell carcinoma of the esophagus after endoscopic resection in men with early esophageal squamous cell carcinoma. Esophagus 2020; 17:149-158. [PMID: 31281950 DOI: 10.1007/s10388-019-00685-w] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/13/2018] [Accepted: 07/03/2019] [Indexed: 02/03/2023]
Abstract
BACKGROUND Macrocytosis is associated with an increased risk of squamous cell carcinoma (SCC) arising in the esophagus in men. The aim of this study was to evaluate the association between macrocytosis and metachronous SCC of the esophagus after endoscopic resection (ER) of early esophageal SCC in men. METHODS The study group comprised 278 men with early esophageal SCC after ER. The main study variables were as follows: (1) cumulative incidence and total number of metachronous SCC of the esophagus according to the presence or absence of macrocytosis (mean corpuscular volume ≥ 106 fl) and (2) predictors of metachronous SCC of the esophagus as assessed with a multivariate Cox proportional-hazards model. RESULTS The median follow-up was 50.3 months. Macrocytosis was associated with a higher 2-year cumulative incidence of metachronous SCC of the esophagus (without macrocytosis vs. with macrocytosis: 11.4% vs. 38.1%, p = 0.002). Macrocytosis was also associated with a higher total number of metachronous SCC of the esophagus per 100 person-years (without macrocytosis vs. with macrocytosis: 7.7 vs. 31.5 per 100 person-years, p < 0.0001). In addition, macrocytosis was a significant predictor of metachronous SCC of the esophagus on multivariate Cox proportional-hazards analysis (relative risk 2.23). CONCLUSION Macrocytosis is a useful predictor of the risk of metachronous SCC of the esophagus after ER of early esophageal SCC in men.
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Affiliation(s)
- Chikatoshi Katada
- Department of Gastroenterology, Kitasato University School of Medicine, 1-15-1 Kitasato, Minami, Sagamihara, 252-0374, Japan.
| | - Tetsuji Yokoyama
- Department of Health Promotion, National Institute of Public Health, 2-3-6 Minami, Wako, Saitama, 351-0197, Japan
| | - Tomonori Yano
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, 6-5-1 Kashiwanoha, Kashiwa, 277-8577, Japan
| | - Ichiro Oda
- Endoscopy Division, National Cancer Center Hospital, 5-1-1 Tsukiji, Chuo-ku, Tokyo, 104-0045, Japan
| | - Yuichi Shimizu
- Department of Gastroenterology, Hokkaido University Graduate School of Medicine, Kita 15 jo Nishi 7 chome, Kitaku, Sapporo, 060-8638, Japan
| | - Hisashi Doyama
- Department of Gastroenterology, Ishikawa Prefectural Central Hospital, 2-1 Kuratsuki-Higashi, Kanazawa, Ishikawa, 920-8530, Japan
| | - Tomoyuki Koike
- Division of Gastroenterology, Tohoku University Graduate School of Medicine, 1-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi, 980-8574, Japan
| | - Kohei Takizawa
- Division of Endoscopy, Shizuoka Cancer Center, 1007 Shimonagakubo, Nagaizumicho, Suntougun, Shizuoka, 411-8777, Japan
| | - Motohiro Hirao
- Department of Surgery, National Hospital Organization, Osaka National Hospital, 2-1-14 Hoenzaka, Tyuoku, Osaka, 540-0006, Japan
| | - Hiroyuki Okada
- Department of Gastroenterology and Hepatology, Okayama University Graduate School of Medicine Dentistry and Pharmaceutical Sciences, 2-5-1 Shikata-cho, Kita-ku, Okayama, 700-8558, Japan
| | - Takako Yoshii
- Department of Gastroenterology, Kanagawa Cancer Center, 2-3-2, Nakao, Asahi-ku, Yokohama, 241-8515, Japan
| | - Yutaro Kubota
- Division of Gastroenterology, Department of Medicine, Showa University School of Medicine, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo, 142-8666, Japan
| | - Takenori Yamanouchi
- Department of Gastroenterology, Kumamoto Regional Medical Center, 5-16-10 Honjyo, Tyuuou, Kumamoto, 860-0811, Japan
| | - Takashi Tsuda
- Department of Clinical Oncology, St. Marianna University School of Medicine, 2-16-1 Sugao, Miyamae-ku, Kawasaki, 216-8511, Japan
| | - Tai Omori
- Department of Surgery, Kawasaki Municipal Kawasaki Hospital, 12-1 Sinkawa dori, Kawasaki ku, Kawasaki City, Kanagawa, 210-0013, Japan
| | - Nozomu Kobayashi
- Department of Gastroenterology, Tochigi Cancer Center, 4-9-13 Yonan, Utsunomiya, Tochigi, 320-0834, Japan
| | - Haruhisa Suzuki
- Endoscopy Division, National Cancer Center Hospital, 5-1-1 Tsukiji, Chuo-ku, Tokyo, 104-0045, Japan
| | - Satoshi Tanabe
- Research and Development Center for New Frontiers, Kitasato University School of Medicine, 1-15-1 Kitasato, Minami, Sagamihara, 252-0374, Japan
| | - Keisuke Hori
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, 6-5-1 Kashiwanoha, Kashiwa, 277-8577, Japan
| | - Norisuke Nakayama
- Department of Gastroenterology, Kanagawa Cancer Center, 2-3-2, Nakao, Asahi-ku, Yokohama, 241-8515, Japan
| | - Hirofumi Kawakubo
- Department of Surgery, Kawasaki Municipal Kawasaki Hospital, 12-1 Sinkawa dori, Kawasaki ku, Kawasaki City, Kanagawa, 210-0013, Japan
| | - Naomi Kakushima
- Division of Endoscopy, Shizuoka Cancer Center, 1007 Shimonagakubo, Nagaizumicho, Suntougun, Shizuoka, 411-8777, Japan
| | - Yasumasa Matsuo
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, St. Marianna University School of Medicine, 2-16-1 Sugao, Miyamae-ku, Kawasaki, 216-8511, Japan
| | - Hideki Ishikawa
- Department of Molecular-Targeting Cancer Prevention, Kyoto Prefectural University of Medicine, Kajii-cho, Kawaramachi-Hirokoji, Kamigyo-ku, Kyoto, 602-8566, Japan
| | - Akira Yokoyama
- Clinical Research Unit, National Hospital Organization Kurihama Medical and Addiction Center, 5-3-1 Nobi, Yokosuka, Kanagawa, 239-0841, Japan
| | - Manabu Muto
- Department of Clinical Oncology, Kyoto University Hospital, 54 Kawaharacho, Shogoin, Sakyo-ku, Kyoto, 606-8507, Japan
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24
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Terada M, Hara H, Daiko H, Mizusawa J, Kadota T, Hori K, Ogawa H, Ogata T, Sakanaka K, Sakamoto T, Kato K, Kitagawa Y. Phase III study of tri-modality combination therapy with induction docetaxel plus cisplatin and 5-fluorouracil versus definitive chemoradiotherapy for locally advanced unresectable squamous-cell carcinoma of the thoracic esophagus (JCOG1510: TRIANgLE). Jpn J Clin Oncol 2020; 49:1055-1060. [PMID: 31411696 DOI: 10.1093/jjco/hyz112] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2019] [Accepted: 07/08/2019] [Indexed: 12/23/2022] Open
Abstract
A randomized phase III trial commenced in Japan in February 2018. Definitive chemoradiotherapy (CRT) with cisplatin plus 5-fluorouracil is the current standard treatment for locally advanced unresectable esophageal carcinoma. The purpose of this study is to confirm the superiority of induction chemotherapy with docetaxel plus cisplatin and 5-fluorouracil (DCF) followed by conversion surgery or definitive CRT over definitive CRT alone for overall survival (OS) in patients with locally advanced unresectable squamous-cell carcinoma of thoracic esophagus. A total of 230 patients will be accrued from 47 Japanese institutions over 4.5 years. The primary endpoint is OS, and the secondary endpoints are progression-free survival, complete response rate of CRT, response rate of DCF, adverse events of DCF and CRT, late adverse events and surgical complications. This trial has been registered at the Japan Registry of Clinical Trials as jRCTs031180181.
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Affiliation(s)
- Mitsumi Terada
- International Trials Management Section, Clinical Research Support Office, National Cancer Center Hospital, Japan.,Medical Department, EORTC Headquarters, Belgium
| | - Hiroki Hara
- Department of Gastroenterology, Saitama Cancer Center, Saitama
| | - Hiroyuki Daiko
- Esophageal Surgery Division, National Cancer Center Hospital, Japan
| | - Junki Mizusawa
- JCOG Data Center/Operations Office, National Cancer Center Hospital, Tokyo
| | - Tomohiro Kadota
- JCOG Data Center/Operations Office, National Cancer Center Hospital, Tokyo
| | - Keisuke Hori
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, Kashiwa, Chiba
| | - Hirofumi Ogawa
- Division of Radiation Oncology, Shizuoka Cancer Center, Shizuoka
| | - Takashi Ogata
- Department of Gastrointestinal Surgery, Kanagawa Cancer Center, Kanagawa
| | - Katsuyuki Sakanaka
- Department of Radiation Oncology and Image-Applied Therapy, Graduate School of Medicine, Kyoto University
| | | | - Ken Kato
- Gastrointestinal Medical Oncology Division, National Cancer Center Hospital, Tokyo
| | - Yuko Kitagawa
- Department of Surgery, Keio University School of Medicine, Tokyo, Japan
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25
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Shinmura K, Ikematsu H, Kojima M, Nakamura H, Osera S, Yoda Y, Hori K, Oono Y, Ochiai A, Yano T. Safety of endoscopic procedures with monopolar versus bipolar instruments in an ex vivo porcine model. BMC Gastroenterol 2020; 20:27. [PMID: 32005163 PMCID: PMC6995232 DOI: 10.1186/s12876-020-1176-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/19/2018] [Accepted: 01/21/2020] [Indexed: 02/07/2023] Open
Abstract
Background Monopolar instruments are generally used in colorectal endoscopic mucosal resection (EMR). Bipolar instruments have previously been reported to be as safe as monopolar instruments. We sought to compare the safety of the monopolar and bipolar snare and hemostatic forceps in an animal model. Methods We created 5-mm, 10-mm, and 15-mm target lesions on an ex vivo porcine rectum. Two lesions of each size were resected via monopolar polypectomy (M-P), monopolar EMR (M-E), bipolar polypectomy (B-P), and bipolar EMR (B-E). We performed a pathological evaluation of the conditions of perforation and the effects of burning on the tissues. In addition, we burned the muscularis propria covered with submucosal layer using monopolar and bipolar hemostatic forceps and performed pathological evaluations. Results Polypectomy and EMR were performed in a total of 24 target lesions. A perforation was found on histology in one case of M-P and one case of M-E after removing target lesions of 15 mm in diameter. There were no perforations during endoscopic resection using the bipolar snare. The thermal denaturation in B-P did not reach the muscularis propria layer regardless of the size of the target lesion. Although thermal damage after using monopolar hemostatic forceps was extensive, thermal denaturation was only seen on the surface of the submucosal layer when bipolar hemostatic forceps were used. Conclusions Bipolar instruments cause less damage to the tissue than monopolar instruments. Our results also suggest that bipolar instruments may be safer than monopolar instruments in endoscopic procedures for colorectal lesions.
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Affiliation(s)
- Kensuke Shinmura
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, 6-5-1, Kashiwanoha, Kashiwa, Chiba, 277-8577, Japan.
| | - Hiroaki Ikematsu
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, 6-5-1, Kashiwanoha, Kashiwa, Chiba, 277-8577, Japan
| | - Motohiro Kojima
- Department of Pathology and Clinical Laboratories, National Cancer Center Hospital East, 6-5-1, Kashiwanoha, Kashiwa, Chiba, 277-8577, Japan
| | - Hiroshi Nakamura
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, 6-5-1, Kashiwanoha, Kashiwa, Chiba, 277-8577, Japan
| | - Shozo Osera
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, 6-5-1, Kashiwanoha, Kashiwa, Chiba, 277-8577, Japan
| | - Yusuke Yoda
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, 6-5-1, Kashiwanoha, Kashiwa, Chiba, 277-8577, Japan
| | - Keisuke Hori
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, 6-5-1, Kashiwanoha, Kashiwa, Chiba, 277-8577, Japan
| | - Yasuhiro Oono
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, 6-5-1, Kashiwanoha, Kashiwa, Chiba, 277-8577, Japan
| | - Atsushi Ochiai
- Department of Pathology and Clinical Laboratories, National Cancer Center Hospital East, 6-5-1, Kashiwanoha, Kashiwa, Chiba, 277-8577, Japan
| | - Tomonori Yano
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, 6-5-1, Kashiwanoha, Kashiwa, Chiba, 277-8577, Japan
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26
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Sakai Y, Takemoto S, Hori K, Nishimura M, Ikematsu H, Yano T, Yokota H. Automatic detection of early gastric cancer in endoscopic images using a transferring convolutional neural network. Annu Int Conf IEEE Eng Med Biol Soc 2019; 2018:4138-4141. [PMID: 30441266 DOI: 10.1109/embc.2018.8513274] [Citation(s) in RCA: 46] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Endoscopic image diagnosis assisted by machine learning is useful for reducing misdetection and interobserver variability. Although many results have been reported, few effective methods are available to automatically detect early gastric cancer. Early gastric cancer have poor morphological features, which implies that automatic detection methods can be extremely difficult to construct. In this study, we proposed a convolutional neural network-based automatic detection scheme to assist the diagnosis of early gastric cancer in endoscopic images. We performed transfer learning using two classes (cancer and normal) of image datasets that have detailed texture information on lesions derived from a small number of annotated images. The accuracy of our trained network was 87.6%, and the sensitivity and specificity were well balanced, which is important for future practical use. We also succeeded in presenting a candidate region of early gastric cancer as a heat map of unknown images. The detection accuracy was 82.8%. This means that our proposed scheme may offer substantial assistance to endoscopists in decision making.
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27
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Kumahara K, Ikematsu H, Shinmura K, Murano T, Inaba A, Okumura K, Nishihara K, Sunakawa H, Furue Y, Ito R, Sato D, Minamide T, Okamoto N, Yamamoto Y, Suyama M, Takashima K, Nakajo K, Yoda Y, Hori K, Oono Y, Yano T. Objective evaluation of the visibility of colorectal lesions using eye tracking. Dig Endosc 2019; 31:552-557. [PMID: 30869814 DOI: 10.1111/den.13397] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/27/2018] [Accepted: 03/10/2019] [Indexed: 12/13/2022]
Abstract
BACKGROUND AND AIM To assess the visibility of colorectal lesions using blue laser imaging (BLI)-bright and linked-color imaging (LCI) with an eye-tracking system. METHODS Eleven endoscopists evaluated 90 images of 30 colorectal lesions. The lesions were randomly selected. Three images of each lesion comprised white light imaging (WLI), BLI-bright, and LCI in the same position. Participants gazed at the images, and their eye movements were tracked by the eye tracker. We analyzed whether the participants could detect the lesion and how long they took to detect the lesion. We assessed the miss rate and detection time among the imaging modalities. RESULTS One endoscopist was excluded, and 10 endoscopists were assessed. Overall, 12.6% of lesions were missed with WLI, 6.0% with BLI-bright, and 4.3% with LCI; the miss rate of BLI-bright and LCI was significantly lower than that of WLI (P < 0.01), with no significant difference between the former modalities (P = 0.54). Mean (± SD) detection times were 1.58 ± 1.60 s for WLI, 1.01 ± 1.21 s for BLI-bright, and 1.10 ± 1.16 s for LCI. Detection time for BLI-bright and LCI was significantly shorter than that for WLI (P < 0.0001), with no significant difference between the former modalities (P = 0.34). Regarding the miss rate and detection time between the expert and the non-experts, there was a significant difference with WLI but not with BLI-bright and LCI. CONCLUSION Blue laser imaging-bright and LCI improved the detection of colorectal lesions compared with WLI using an eye-tracking system.
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Affiliation(s)
- Kana Kumahara
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, Chiba, Japan
| | - Hiroaki Ikematsu
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, Chiba, Japan
| | - Kensuke Shinmura
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, Chiba, Japan
| | - Tatsuro Murano
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, Chiba, Japan
| | - Atsushi Inaba
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, Chiba, Japan
| | - Kei Okumura
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, Chiba, Japan
| | - Keiichiro Nishihara
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, Chiba, Japan
| | - Hironori Sunakawa
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, Chiba, Japan
| | - Yasuaki Furue
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, Chiba, Japan
| | - Renma Ito
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, Chiba, Japan
| | - Daiki Sato
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, Chiba, Japan
| | - Tatsunori Minamide
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, Chiba, Japan
| | - Naoki Okamoto
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, Chiba, Japan
| | - Yoichi Yamamoto
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, Chiba, Japan
| | - Masayuki Suyama
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, Chiba, Japan
| | - Kenji Takashima
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, Chiba, Japan
| | - Keiichiro Nakajo
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, Chiba, Japan
| | - Yusuke Yoda
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, Chiba, Japan
| | - Keisuke Hori
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, Chiba, Japan
| | - Yasuhiro Oono
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, Chiba, Japan
| | - Tomonori Yano
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, Chiba, Japan
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28
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Hori K, Hashimoto T, Kuhara S. Basic study of random sampling for compressed sensing using MRI simulator. Hell J Nucl Med 2019; 22 Suppl 2:141. [PMID: 31802054] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Received: 10/21/2019] [Accepted: 11/11/2019] [Indexed: 06/10/2023]
Abstract
INTRODUCTION Magnetic resonance imaging (MRI) is a tomography technology that enables the depiction of anatomical structures with information about various features. Compressed sensing (CS) technology has recently been used for magnetic resonance image reconstruction from sparse information. Random sampling methods based on the various probability density function (PDF) are being developed to allow the efficient application of CS technology. Accurate numerical simulation is obviously important for the evaluation of the sampling method that are developed. In this study, the simulation method with MRI simulator and actual MRI scanner was carried out. Moreover, the difference between the result acquired from our simulation and basic one was revealed. METHODS We first examined a basic method using a 2D Shepp-Logan phantom. This method was only conducted with k-space data obtained from the 2D Fourier transform of the original image. Our method of numerical simulation was applied with the MRI simulator (Bloch Solver, MRI simulations Inc.), an actual MRI system (Vantage Titan 3T, Canon Medical Systems) and a phantom (CAGN-3.0T phantom, Kato Medience). The real and imaginary part of the k-space were acquired with the MRI simulator using a phase map that was imaged by the actual MRI scanner. Random sampling was performed with two types of PDF and image reconstruction was processed by projection onto convex sets (POCS). Hermitian symmetry is a point-symmetry respect to origin and each point located on the opposite side maintains a relation of complex conjugate. Thus, there is no need to acquire data that formed in point-symmetry with the data that had already been acquired. We used the gaussian random sampling method (GA) and a method that considered Hermitian symmetry (GH). The image quality was evaluated using the normalized root mean squared error (NRMSE). RESULTS AND DISCUSSION In the basic simulation, the average and standard deviation of NRMSE from GH was better than that from GA because consideration of the Hermitian symmetry enables the efficient acquisition of data. However, in our method of numerical simulation, the average and standard deviation of the NRMSE from GH was worse than that from GA. In this simulation method, the phase error was included in the real and imaginary part of the k-space; thus, the Hermitian symmetry cannot hold and the calculation error of reconstruction images from GH stood out. CONCLUSION The method of numerical simulation with the MRI simulator using a phase map was close to the actual conditions and was considered to be useful for the validation of new sampling methods. The random sampling method using GH is expected to be useful for the highly efficient acquisition of data under ideal conditions; however, more accurate phase correction is necessary to apply the actual measurement data.
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Affiliation(s)
- K Hori
- Kyorin University Graduate School of Health Sciences, Tokyo, Japan.
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Kojima T, Fujiwara T, Shirakawa Y, Hori K, Ono H, Nakamoto M, Hirano N, Wakabayashi M, Nomura S, Togashi Y, Nishikawa H, Sato A, Ohtsu A, Doi T. Abstract CT024: Early safety from an open label Phase I study to evaluate the safety and efficacy of a telomerase-specific oncolytic adenovirus (OBP-301) with pembrolizumab in patients with advanced solid tumors. (EPOC1505). Cancer Res 2019. [DOI: 10.1158/1538-7445.am2019-ct024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Background: PD-1 blockade showed promising efficacy for broad type of cancer patients (pts), though objective response rates are very limited. The antitumor potential of oncolytic adenoviruses has been demonstrated in preclinical and clinical studies. In addition to the specific killing of cancer cells via oncolytic adenovirus, these agents prompt the immune system to stimulate an antitumor immune response. OBP-301 is an oncolytic adenovirus in which gene is modified to be able to selectively replicate in cancer cells by introducing human telomerase reverse transcriptase (hTERT) promotor. Further antitumor effect might be expected with an active activation of two different antitumor immunity by OBP-301 in combination with pembrolizumab. Therefore, we conducted phase I study to evaluate the safety and efficacy of OBP-301 with pembrolizumab.
Methods: The major eligibility criteria are pts with advanced or metastatic solid tumor not responded to or intolerant of standard chemotherapies, and with possibility of intratumoral injection. Phase Ia part was designed to determine the recommended dose in a “3+3” cohort-based dose escalation design of OBP-301 (1x1010VP on cohort 1, 1x1011VP on cohort 2 and 1x1012VP on cohort 3) with pembrolizumab (200mg/body q3w). OBP-301 is administered at day1, 15, and, 29 by intratumoral injection and pembrolizumab is administered at day 8 and thereafter every 3 weeks. Primary endpoint is dose limiting toxicity (DLT). Secondary endpoint is response rate, progression free survival, and incidence of adverse event. Phase Ib part was designated to evaluate the safety and efficacy of the recommended dose OBP-301 selected in phase Ia part in combination with pembrolizumab in 10 pts. Biomarker study was planned using paired samples of both tumor biopsy and blood. Clinical trial information: NCT03172819.
Results: The first patient was enrolled on 7 Dec 2017; the last patient in phase Ia part was enrolled on 12 Oct 2018. Nine DLT-evaluable pts were enrolled and treated in phase Ia part: median age was 59; 2/9 female; 8/9 esophageal squamous cell carcinoma, 1/9 gastric adenocarcinoma. No DLT was observed during the DLT evaluation period. The most common adverse events were fever (Gr.2: 2/9, Gr.1: 2/9), hepatic disorder (Gr.3: 1/9, Gr.1: 1/9), pleural effusion (Gr.1:1/9). Preliminary efficacy assessment of phase Ia by investigators’ judgment demonstrated 2 PRs of the 9 pts.
Conclusion: The combination of OBP-301 with pembrolizumab was well tolerated in tested doses. The recommended dose for phase Ib part is 1x1012VP (cohort 3), and additional 10 pts will be enrolled to obtain additional safety and efficacy data. Preliminary result of biomarker analyses using paired samples of both tumor biopsy and blood will be presented.
Citation Format: Takashi Kojima, Toshiyoshi Fujiwara, Yasuhiro Shirakawa, Keisuke Hori, Hiromi Ono, Masako Nakamoto, Nami Hirano, Masashi Wakabayashi, Shogo Nomura, Yosuke Togashi, Hiroyoshi Nishikawa, Akihiro Sato, Atushi Ohtsu, Toshihiko Doi. Early safety from an open label Phase I study to evaluate the safety and efficacy of a telomerase-specific oncolytic adenovirus (OBP-301) with pembrolizumab in patients with advanced solid tumors. (EPOC1505) [abstract]. In: Proceedings of the American Association for Cancer Research Annual Meeting 2019; 2019 Mar 29-Apr 3; Atlanta, GA. Philadelphia (PA): AACR; Cancer Res 2019;79(13 Suppl):Abstract nr CT024.
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Affiliation(s)
- Takashi Kojima
- 1National Cancer Center Hospital EastNational Cancer Center Hospital East, Kashiwa, Japan
| | | | | | - Keisuke Hori
- 1National Cancer Center Hospital EastNational Cancer Center Hospital East, Kashiwa, Japan
| | - Hiromi Ono
- 3Clinical Research Support Office, National Cancer Center Hospital East, Kashiwa, Japan
| | - Masako Nakamoto
- 3Clinical Research Support Office, National Cancer Center Hospital East, Kashiwa, Japan
| | - Nami Hirano
- 3Clinical Research Support Office, National Cancer Center Hospital East, Kashiwa, Japan
| | - Masashi Wakabayashi
- 3Clinical Research Support Office, National Cancer Center Hospital East, Kashiwa, Japan
| | - Shogo Nomura
- 3Clinical Research Support Office, National Cancer Center Hospital East, Kashiwa, Japan
| | - Yosuke Togashi
- 4Exploratory Oncology Research & Clinical Trial Center, National Cancer Center, Kashiwa, Japan
| | - Hiroyoshi Nishikawa
- 4Exploratory Oncology Research & Clinical Trial Center, National Cancer Center, Kashiwa, Japan
| | - Akihiro Sato
- 3Clinical Research Support Office, National Cancer Center Hospital East, Kashiwa, Japan
| | - Atushi Ohtsu
- 1National Cancer Center Hospital EastNational Cancer Center Hospital East, Kashiwa, Japan
| | - Toshihiko Doi
- 1National Cancer Center Hospital EastNational Cancer Center Hospital East, Kashiwa, Japan
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Bernthal NM, Upfill-Brown A, Burke ZDC, Ishmael CR, Hsiue P, Hori K, Hornicek F, Eckardt JJ. Long-term follow-up of custom cross-pin fixation of 56 tumour endoprosthesis stems: a single-institution experience. Bone Joint J 2019; 101-B:724-731. [PMID: 31154850 DOI: 10.1302/0301-620x.101b6.bjj-2018-0993.r1] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
AIMS Aseptic loosening is a major cause of failure in cemented endoprosthetic reconstructions. This paper presents the long-term outcomes of a custom-designed cross-pin fixation construct designed to minimize rotational stress and subsequent aseptic loosening in selected patients. The paper will also examine the long-term survivorship and modes of failure when using this technique. PATIENTS AND METHODS A review of 658 consecutive, prospectively collected cemented endoprosthetic reconstructions for oncological diagnoses at a single centre between 1980 and 2017 was performed. A total of 51 patients were identified with 56 endoprosthetic implants with cross-pin fixation, 21 of which were implanted following primary resection of tumour. Locations included distal femoral (n = 36), proximal femoral (n = 7), intercalary (n = 6), proximal humeral (n = 3), proximal tibial (n = 3), and distal humeral (n = 1). RESULTS The median follow-up was 132 months (interquartile range (IQR) 44 to 189). In all, 20 stems required revision: eight for infection, five for structural failure, five for aseptic loosening, and two for tumour progression. Mechanical survivorship at five, ten, and 15 years was 84%, 78%, and 78%, respectively. Mechanical failure rate varied by location, with no mechanical failures of proximal femoral constructs and distal femoral survivorship of 82%, 77%, and 77% at five, ten, and 15 years. The survivorship of primary constructs at five years was 74%, with no failure after 40 months, while the survivorship for revision constructs was 89%, 80%, and 80% at five, ten, and 15 years. CONCLUSION The rate of mechanical survivorship in our series is similar to those reported for other methods of reconstruction for short diaphyseal segments, such as compressive osseointegration. The mechanical failure rate differed by location, while there was no substantial difference in long-term survival between primary and revision reconstructions. Overall, custom cross-pin fixation is a viable option for endoprosthetic reconstruction of short metaphyseal segments with an acceptable rate of mechanical failure. Cite this article: Bone Joint J 2019;101-B:724-731.
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Affiliation(s)
- N M Bernthal
- Department of Orthopaedic Surgery, University of California, Los Angeles, Los Angeles, California, USA
| | - A Upfill-Brown
- Department of Orthopaedic Surgery, University of California, Los Angeles, Los Angeles, California, USA
| | - Z D C Burke
- Department of Orthopaedic Surgery, University of California, Los Angeles, Los Angeles, California, USA
| | - C R Ishmael
- Department of Orthopaedic Surgery, University of California, Los Angeles, Los Angeles, California, USA
| | - P Hsiue
- Department of Orthopaedic Surgery, University of California, Los Angeles, Los Angeles, California, USA
| | - K Hori
- Department of Orthopaedic Surgery, University of California, Los Angeles, Los Angeles, California, USA
| | - F Hornicek
- Department of Orthopaedic Surgery, University of California, Los Angeles, Los Angeles, California, USA
| | - J J Eckardt
- Department of Orthopaedic Surgery, University of California, Los Angeles, Los Angeles, California, USA
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Oono Y, Kuwata T, Takashima K, Shinmura K, Hori K, Yoda Y, Ikematsu H, Shitara K, Kinoshita T, Yano T. Human epidermal growth factor receptor 2-, epidermal growth factor receptor-, and mesenchymal epithelial transition factor-positive sites of gastric cancer using surgical samples. Gastric Cancer 2019; 22:335-343. [PMID: 29951752 DOI: 10.1007/s10120-018-0853-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/05/2018] [Accepted: 06/24/2018] [Indexed: 01/04/2023]
Abstract
BACKGROUND Receptor tyrosine kinases (RTKs) play critical roles in gastric cancer (GC) progression and are potential targets for novel molecular-targeted agents or photo-immunotherapies. During patient selection, targeted biopsy is the first step. However, heterogeneous expression of RTKs based on the macroscopic appearance in GC has not been extensively addressed. Accordingly, in this study, we evaluated differences in RTK expression associated with macroscopic appearance in GC. METHODS In total, 375 consecutive patients who had undergone gastrectomy at the National Cancer Center Hospital East and who had histologically proven adenocarcinoma, available archived tumor sample, and no history of chemotherapy were enrolled in this study. For these cases, tissue microarray (TMA) samples were examined using immunohistochemistry (IHC). Based on the results of IHC, cases were selected for detailed examination. We re-evaluated IHC scores in more than three tumor blocks per case and comparatively evaluated differences in IHC expression in RTKs between the mucosal portion (MuP) and invasive portion (InP). RESULTS Human epidermal growth factor receptor 2 (HER2)-, epidermal growth factor receptor (EGFR)-, and mesenchymal epithelial transition factor (c-MET)-positive rates were 6, 9, and 20%, respectively. Twenty-two cases were then analyzed to assess differences in IHC expression levels in the same lesion. Concordance rates of positive staining of HER2, EGFR, and MET between MuP and whole tumor were 100, 40, and 56% and those with InP were 46, 100, and 56%. CONCLUSIONS To avoid underestimating expression status, biopsies must be taken from MuP for HER2, InP for EGFR, and both proportions for c-MET.
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Affiliation(s)
- Yasuhiro Oono
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, 6-5-1 Kashiwanoha, Kashiwa, Chiba, 277-8577, Japan.
| | - Takeshi Kuwata
- Department of Pathology and Clinical Laboratories, National Cancer Center Hospital East, Kashiwa, Japan
| | - Kenji Takashima
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, 6-5-1 Kashiwanoha, Kashiwa, Chiba, 277-8577, Japan
| | - Kensuke Shinmura
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, 6-5-1 Kashiwanoha, Kashiwa, Chiba, 277-8577, Japan
| | - Keisuke Hori
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, 6-5-1 Kashiwanoha, Kashiwa, Chiba, 277-8577, Japan
| | - Yusuke Yoda
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, 6-5-1 Kashiwanoha, Kashiwa, Chiba, 277-8577, Japan
| | - Hiroaki Ikematsu
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, 6-5-1 Kashiwanoha, Kashiwa, Chiba, 277-8577, Japan
| | - Kohei Shitara
- Department of Gastroenterology and Gastrointestinal Oncology, National Cancer Center Hospital East, Kashiwa, Japan
| | - Takahiro Kinoshita
- Gastric Surgery Division, National Cancer Center Hospital East, Kashiwa, Japan
| | - Tomonori Yano
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, 6-5-1 Kashiwanoha, Kashiwa, Chiba, 277-8577, Japan
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Oono Y, Kensuke S, Yoda Y, Hori K, Ikematsu H, Yano T. Cervical esophageal adenocarcinoma arising from heterotopic gastric mucosa, treated with endoscopic submucosal dissection. Endoscopy 2019; 51:E28-E29. [PMID: 30469153 DOI: 10.1055/a-0767-6253] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/10/2022]
Affiliation(s)
- Yasuhiro Oono
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, Chiba, Japan.,Department of Internal Medicine, Tokyo Metropolitan Ebara Hospital, Tokyo, Japan
| | - Shinmura Kensuke
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, Chiba, Japan
| | - Yusuke Yoda
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, Chiba, Japan
| | - Keisuke Hori
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, Chiba, Japan
| | - Hiroaki Ikematsu
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, Chiba, Japan
| | - Tomonori Yano
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, Chiba, Japan
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Nakajo K, Yoda Y, Hori K, Takashima K, Sinmura K, Oono Y, Ikematsu H, Yano T. Technical feasibility of endoscopic submucosal dissection for local failure after chemoradiotherapy or radiotherapy for esophageal squamous cell carcinoma. Gastrointest Endosc 2018; 88:637-646. [PMID: 30220299 DOI: 10.1016/j.gie.2018.06.033] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/03/2018] [Accepted: 06/29/2018] [Indexed: 02/08/2023]
Abstract
BACKGROUND AND AIMS Salvage endoscopic submucosal dissection (ESD) after chemoradiotherapy can be technically difficult as a result of radiation-induced fibrosis. We aimed to evaluate the technical feasibility of ESD for local failure after chemoradiotherapy for esophageal squamous cell carcinoma (ESCC) and for other primary lesions within the irradiation field. METHODS Consecutive patients treated with ESD for superficial ESCC between December 2009 and May 2017 were investigated retrospectively and stratified into group A (33 patients, 35 lesions; local failure at the primary site after chemoradiotherapy), group B (25 patients, 34 lesions; second primary lesions within the irradiation field), and group C (550 patients, 596 lesions; radiotherapy-naïve superficial ESCC). We evaluated procedural success rate, en bloc resection rate, 1-year local relapse-free survival (LRFS) rate, procedure time, and incidence of major adverse events. RESULTS The rates of procedural success and en bloc resection, respectively, were significantly lower in group A (89%, 86%) than in groups B (100%, 100%) and C (100%, 98%). The 1-year LRFS rates were 86%, 100%, and 99% in groups A, B, and C, respectively, and significantly lower in group A than in group C. Serious adverse events including perforation were not observed in groups A and B; perforation occurred only in group C (2.8%). CONCLUSIONS ESD is technically feasible in patients with local failure, especially as initial salvage treatment and as treatment for second primary lesions within the irradiation field.
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Affiliation(s)
- Keiichiro Nakajo
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, Kashiwa, Japan
| | - Yusuke Yoda
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, Kashiwa, Japan
| | - Keisuke Hori
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, Kashiwa, Japan
| | - Kenji Takashima
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, Kashiwa, Japan
| | - Kensuke Sinmura
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, Kashiwa, Japan
| | - Yasuhiro Oono
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, Kashiwa, Japan
| | - Hiroaki Ikematsu
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, Kashiwa, Japan
| | - Tomonori Yano
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, Kashiwa, Japan
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Daiko H, Hara H, Ogawa H, Hori K, Mizusawa J, Ozawa S, Takagi M, Tanaka M, Baba H, Shirakawa Y, Tsuda M, Nakagawa S, Takeuchi H, Abe T, Ito Y, Kojima T, Kadota T, Fukuda H, Kato K, Kitagawa Y. TRIANgLE study (JCOG1510): A phase III study of tri-modality combination therapy with induction docetaxel (DOC), cisplatin (CDDP), 5-fluorouracil (FU) (DCF) vs definitive chemoradiotherapy (dCRT) for locally advanced unresectable squamous cell carcinoma (SCC) of the thoracic esophagus. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy282.162] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Ohe M, Haraguchi G, Kumanomido J, Obuchi A, Hori K, Okabe K, Ito S, Ueno S, Fukumoto Y. P6606New tailored approach for persistent and long persistent atrial fibrillation - Early area defragmentation (EADF). Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy566.p6606] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- M Ohe
- Kurume University School of Medicine, Kurume, Japan
| | - G Haraguchi
- Kurume University School of Medicine, Kurume, Japan
| | - J Kumanomido
- Kurume University School of Medicine, Kurume, Japan
| | - A Obuchi
- Kurume University School of Medicine, Kurume, Japan
| | - K Hori
- Kurume University School of Medicine, Kurume, Japan
| | - K Okabe
- Kurume University School of Medicine, Kurume, Japan
| | - S Ito
- Kurume University School of Medicine, Kurume, Japan
| | - S Ueno
- Kurume University School of Medicine, Kurume, Japan
| | - Y Fukumoto
- Kurume University School of Medicine, Kurume, Japan
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Iizumi T, Yoshino M, Kagaya H, Hori K, Ono T. Effect of tongue-palate contact mode on food transport during mastication. J Oral Rehabil 2018; 45:605-611. [DOI: 10.1111/joor.12654] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/16/2018] [Indexed: 11/27/2022]
Affiliation(s)
- T. Iizumi
- Department of Communication Disorders; School of Rehabilitation Science; Health Sciences University of Hokkaido; Hokkaido Japan
- Department of Rehabilitation Medicine I; School of Medicine; Fujita Health University; Toyoake Japan
| | - M. Yoshino
- Graduate School of Comprehensive Human Sciences; University of Tsukuba; Tokyo Japan
| | - H. Kagaya
- Department of Rehabilitation Medicine I; School of Medicine; Fujita Health University; Toyoake Japan
| | - K. Hori
- Division of Comprehensive Prosthodontics; Niigata University Graduate School of Medical and Dental Sciences; Niigata Japan
| | - T. Ono
- Division of Comprehensive Prosthodontics; Niigata University Graduate School of Medical and Dental Sciences; Niigata Japan
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Minagi Y, Ono T, Hori K, Fujiwara S, Tokuda Y, Murakami K, Maeda Y, Sakoda S, Yokoe M, Mihara M, Mochizuki H. Cover Image. J Oral Rehabil 2018. [DOI: 10.1111/joor.12640] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Hombu T, Yano T, Hatogai K, Kojima T, Kadota T, Onozawa M, Yoda Y, Hori K, Oono Y, Ikematsu H, Fujii S. Salvage endoscopic resection (ER) after chemoradiotherapy for esophageal squamous cell carcinoma: What are the risk factors for recurrence after salvage ER? Dig Endosc 2018; 30:338-346. [PMID: 29106753 DOI: 10.1111/den.12984] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/14/2017] [Accepted: 10/30/2017] [Indexed: 12/13/2022]
Abstract
BACKGROUND AND AIM Salvage endoscopic resection (ER) is among the curative treatments for superficial local failure after chemoradiotherapy (CRT) for esophageal squamous cell carcinoma (ESCC). The present study aimed to clarify risk factors for recurrence after salvage ER. METHODS This study enrolled consecutive ESCC patients treated with salvage ER for local failure after CRT between 1998 and 2013. Recurrences after salvage ER included locoregional recurrences and distant metastases. Multivariate analysis was carried out on clinicopathological parameters to identify risk factors for post-salvage ER recurrence. RESULTS Of the 72 patients enrolled in this study, 37/8/23/4 patients had been staged before CRT as cT1/T2/T3/T4 and 44/28 patients as cN0/N1, respectively, and local failures detected before salvage ER were residual lesions after CRT in 19 and local recurrences in 53 patients. Resected specimens were classified as pT1a (M) in 45 and pT1b (SM) in 27 patients. During the median 45-month follow up (range, 3-175 months) after salvage ER, 27 (38%) patients developed recurrence with a 3-year recurrence-free survival rate of 48.9% (95% confidence interval [CI], 36.5-60.3). Multivariate analysis showed that residual lesions after CRT (HR, 2.55; 95% CI, 1.32-4.94) and lesions with a submucosal tumor (SMT)-like appearance before salvage ER (HR, 2.08; 95% CI, 1.04-4.18) were significantly associated with post-salvage ER recurrence. CONCLUSIONS Clinical findings (e.g. residual tumors found immediately after CRT and macroscopic SMT-like appearance before salvage ER) were shown to be significant risk factors for post-salvage ER recurrence.
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Affiliation(s)
- Takuya Hombu
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, Kashiwa, Japan
| | - Tomonori Yano
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, Kashiwa, Japan
| | - Ken Hatogai
- Department of Gastroenterology and Gastrointestinal Oncology, National Cancer Center Hospital East, Kashiwa, Japan
| | - Takashi Kojima
- Department of Gastroenterology and Gastrointestinal Oncology, National Cancer Center Hospital East, Kashiwa, Japan
| | - Tomohiro Kadota
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, Kashiwa, Japan
| | - Masakatsu Onozawa
- Department of Radiation Oncology, National Cancer Center Hospital East, Kashiwa, Japan
| | - Yusuke Yoda
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, Kashiwa, Japan
| | - Keisuke Hori
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, Kashiwa, Japan
| | - Yasuhiro Oono
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, Kashiwa, Japan
| | - Hiroaki Ikematsu
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, Kashiwa, Japan
| | - Satoshi Fujii
- Division of Pathology, Exploratory Oncology Research & Clinical Trial Center, National Cancer Center, Kashiwa, Japan
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Minagi Y, Ono T, Hori K, Fujiwara S, Tokuda Y, Murakami K, Maeda Y, Sakoda S, Yokoe M, Mihara M, Mochizuki H. Relationships between dysphagia and tongue pressure during swallowing in Parkinson's disease patients. J Oral Rehabil 2018; 45:459-466. [DOI: 10.1111/joor.12626] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/12/2018] [Indexed: 11/26/2022]
Affiliation(s)
- Y. Minagi
- Department of Prosthodontics, Gerodontology and Oral Rehabilitation; Graduate School of Dentistry; Osaka University; Suita Japan
| | - T. Ono
- Department of Prosthodontics, Gerodontology and Oral Rehabilitation; Graduate School of Dentistry; Osaka University; Suita Japan
- Division of Comprehensive Prosthodontics; Graduated School of Medical and Dental Sciences; Niigata University; Niigata Japan
| | - K. Hori
- Department of Prosthodontics, Gerodontology and Oral Rehabilitation; Graduate School of Dentistry; Osaka University; Suita Japan
- Division of Comprehensive Prosthodontics; Graduated School of Medical and Dental Sciences; Niigata University; Niigata Japan
| | - S. Fujiwara
- Division of Comprehensive Prosthodontics; Graduated School of Medical and Dental Sciences; Niigata University; Niigata Japan
| | - Y. Tokuda
- Department of Prosthodontics, Gerodontology and Oral Rehabilitation; Graduate School of Dentistry; Osaka University; Suita Japan
| | - K. Murakami
- Department of Prosthodontics, Gerodontology and Oral Rehabilitation; Graduate School of Dentistry; Osaka University; Suita Japan
| | - Y. Maeda
- Department of Prosthodontics, Gerodontology and Oral Rehabilitation; Graduate School of Dentistry; Osaka University; Suita Japan
| | - S. Sakoda
- Department of Neurology; Toneyama National Hospital; Toyonaka Japan
| | - M. Yokoe
- Department of Neurology; Toyonaka City Hospital; Toyonaka Japan
| | - M. Mihara
- Department of Neurology; Osaka University Graduate School of Medicine; Suita Japan
| | - H. Mochizuki
- Department of Neurology; Osaka University Graduate School of Medicine; Suita Japan
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Iguchi T, Ohkubo M, Sugiyama T, Hori K, Ono T, Ishida R. Effects of water viscosity and tongue ingestion site on tongue pressure during food bolus propulsion. J Oral Rehabil 2018. [DOI: 10.1111/joor.12623] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- T. Iguchi
- Department of Oral Health & Clinical Science; Division of Dysphagia Rehabilitation; Tokyo Dental College; Tokyo Japan
| | - M. Ohkubo
- Department of Oral Health & Clinical Science; Division of Dysphagia Rehabilitation; Tokyo Dental College; Tokyo Japan
| | - T. Sugiyama
- Department of Oral Health & Clinical Science; Division of Dysphagia Rehabilitation; Tokyo Dental College; Tokyo Japan
| | - K. Hori
- Divisions of Comprehensive Prosthodontics; Niigata University Graduate School of Medical and Dental Sciences; Niigata Japan
| | - T. Ono
- Divisions of Comprehensive Prosthodontics; Niigata University Graduate School of Medical and Dental Sciences; Niigata Japan
| | - R. Ishida
- Department of Oral Health & Clinical Science; Division of Dysphagia Rehabilitation; Tokyo Dental College; Tokyo Japan
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Kamunur K, Jandosov J, Аbdulkarimova R, Hori K, Yelemessova Z. Combustion Study of Different Transitional Metal Oxide based on
AN/MgAl Composites Gas Generators. Eurasian Chem Tech J 2017. [DOI: 10.18321/ectj682] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
Ammonium nitrate (AN)-based composite gas generator have attracted a considerable amount of attention because of the clean burning nature of AN as an oxidizer. However, ammonium nitrate-based gas generator has several major problems, namely, poor ignitability, a low burning rate, low energy, and high hygroscopicity. The addition of different transitional metal oxides and MgAl mechanical alloyed proved to be effective in improving the burning characteristics of AN-based gas generator. In this research work, combustion study of different transition metal oxide based on AN/MgAl composites gas generators was studied. Gas generators were combusted at the pressure of 1 MPa, 3 MPa and 5 MPa in the combustion chamber and the burning rates were determined. It was stated that the addition of metal oxides into the composition of the gas generators improves ignition at low pressure and increases the burning rate. The use of the mechanical MgAl alloys as a fuel allowed the ignition of the gas generator at a lower temperature. The method of thermogravimetric/differential thermal analyzer (TG/DTA) was used to investigate the effect of metal oxides addition on the AN/MgAl-based gas generators thermal decomposition characteristics.
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Nakamura H, Ikematsu H, Osera S, Ito R, Sato D, Minamide T, Okamoto N, Yamamoto Y, Hombu T, Takashima K, Nakajo K, Kadota T, Yoda Y, Hori K, Oono Y, Yano T. Visual assessment of colorectal flat and depressed lesions by using narrow band imaging. Endosc Int Open 2017; 5:E1284-E1288. [PMID: 29218321 PMCID: PMC5718906 DOI: 10.1055/s-0043-120992] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/15/2017] [Accepted: 09/08/2017] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND AND STUDY AIMS Visual assessment of laterally spreading tumors non-granular type (LST-NG) and depressed lesions by narrow band imaging (NBI) without magnification has not been studied. We investigated the role of non-magnifying NBI in detecting LST-NG and type IIc lesions on colonoscopy. PATIENTS AND METHODS This retrospective study examined consecutive patients diagnosed as having LST-NG and/or type IIc lesions in our hospital between August 2011 and July 2013. These lesions were classified as "Brownish area (BA)," "Brown only in the margins (O-ring sign)," "Same color as the normal mucosa (SC)," and "Whitish area (WA)" based on their appearance on non-magnifying NBI, and their appearance were compared with their histopathological findings. RESULTS A total of 18 type IIc and 180 LST-NG lesions were analyzed. Among the type IIc lesions, 5 (28 %), 12 (67 %), and 1 (5 %) were classified as BA, O-ring sign, and SC, respectively. Among the LST-NG lesions, 126 (70 %), 26 (14 %), and 28 lesions (16 %) were classified as BA, O-ring sign, and SC, respectively. The IIc lesions were found to have 1 lesion (20 %) with high-grade dysplasia (HGD) in the BA, and 2 lesions (17 %) with invasive cancer (IC) in the O-ring sign group. Among the LST-NG lesions, 27 (21 %) were found to have IC and 49 (39 %), HGD in the BA group; 8 lesions (31 %) had IC and 4 (15 %) had HGD in the O-ring sign group; and 1 lesion (4 %) had IC and 4 (14 %) had HGD in the SC group. CONCLUSIONS Most flat and depressed colorectal lesions were seen on non-magnifying NBI as brown lesions with the exception of some flat lesions that were indistinguishable in color from the adjacent normal mucosa. Some of these flat lesions were also found to have HGD or IC.
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Affiliation(s)
- Hiroshi Nakamura
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, Chiba, Japan
| | - Hiroaki Ikematsu
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, Chiba, Japan,Corresponding author Hiroaki Ikematsu, MD Department of Gastroenterology and EndoscopyNational Cancer Center Hospital East6-5-1, Kashiwanoha, Kashiwa, Chiba, 277-8577Japan04-7134-6865
| | - Shozo Osera
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, Chiba, Japan,Department of Gastroenterology, Saku Central Hospital Advanced Care Center, Nagano, Japan
| | - Renma Ito
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, Chiba, Japan
| | | | - Tatsunori Minamide
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, Chiba, Japan
| | - Naoki Okamoto
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, Chiba, Japan
| | - Yoichi Yamamoto
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, Chiba, Japan
| | - Takuya Hombu
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, Chiba, Japan
| | - Kenji Takashima
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, Chiba, Japan
| | - Keiichiro Nakajo
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, Chiba, Japan
| | - Tomohiro Kadota
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, Chiba, Japan
| | - Yusuke Yoda
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, Chiba, Japan
| | - Keisuke Hori
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, Chiba, Japan
| | - Yasuhiro Oono
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, Chiba, Japan
| | - Tomonori Yano
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, Chiba, Japan
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Ono Y, Ora H, Kiko Y, Hori K, Hirobe Y, Miyagi A, Mitou T, Higuma M, Wada Y, Miyake Y. Gait evaluation of normal pressure hydrocephalus using inertial sensor. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.2035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Atamanov M, Amrousse R, Jandosov J, Hori K, Kerimkulova A, Chenchik D, Kolesnikov B. Combustion Characteristics of HAN-based Green Propellant Assisted with Nanoporous Active Carbons. Eurasian Chem Tech J 2017. [DOI: 10.18321/ectj665] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
Combustion of hydroxylammonium nitrate (95 wt.% HAN) ‒ water solution in presence of high specific surface area activated carbons is investigated in a constant-pressure bomb within the pressure range of 1‒6 MPa. The linear burning rate increased for the system of HAN admixed with activated carbons compared to those of the HAN alone. Moreover, the thermal decomposition of HAN (95 wt.%) ‒ water solution spiked with activated carbons was assessed by DTA – TG method. In the presence of activated carbons, the ability to trigger the decomposition at a lower temperature (86 °C vs 185 °C) was observed. The volatile products formed in the course of thermal decomposition of HAN, spiked with activated carbons were characterized by electron ionization mass spectrometry analysis. Primary products of HAN decomposition: m/z = 33 (NH2OH) and m/z = 63 (HNO3), which are further responsible for the formation of secondary products such as N2O, NO, HNO2, NO2, O2 etc. Significant reduction of NOx emissions during thermal decomposition of HAN (95 wt.%) ‒ water solution was observed (ca. 30%) in presence of activated carbons.
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Osera S, Ikematsu H, Fujii S, Hori K, Oono Y, Yano T, Kaneko K. Endoscopic treatment outcomes of laterally spreading tumors with a skirt (with video). Gastrointest Endosc 2017; 86:533-541. [PMID: 28174124 DOI: 10.1016/j.gie.2017.01.037] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/06/2016] [Accepted: 01/16/2017] [Indexed: 02/08/2023]
Abstract
BACKGROUND AND AIMS A "skirt" is a slightly elevated flat lesion with wide pits occasionally observed at the margin of laterally spreading tumors (LSTs). However, the endoscopic treatment outcomes of LSTs with skirts have not been clarified. The aim of this study was to evaluate the endoscopic treatment outcomes of LSTs with skirts. METHODS Between February 2006 and March 2014, 996 LSTs were retrospectively examined to assess the clinicopathologic characteristics, procedure time, en bloc resection rate, R0 resection rate, adverse events, and local recurrence rate of endoscopic submucosal dissection (ESD) and of endoscopic resection. RESULTS Endoscopic treatment was performed in 35 cases of LSTs with skirts (ratio of ESD to endoscopic piecemeal mucosal resection [EPMR], 32:3) and 961 cases of LSTs without skirts (ratio of ESD to EMR to EPMR to polypectomy, 381:275:114:191). LSTs with a skirt were associated with a significantly higher recurrence rate (P < .01). In both ESD and EPMR, LSTs with a skirt were associated with a higher recurrence rate when compared with LSTs without a skirt (odds ratio, 12.7; P = .032, and odds ratio, 12.3; P = .061, respectively). Multivariate analysis demonstrated that the presence of the skirt and piecemeal resection were significant predictors of local recurrence. CONCLUSIONS LSTs with skirts had a significantly higher local recurrence rate after endoscopic treatment compared with LSTs without skirts, especially after EPMR. Therefore, ESD should be recommended as an endoscopic treatment for LSTs with skirts to minimize local recurrence.
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Affiliation(s)
- Shozo Osera
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, Kashiwa, Japan; Department of Gastroenterology, Saku Central Hospital Advanced Care Center, Nagano, Japan
| | - Hiroaki Ikematsu
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, Kashiwa, Japan
| | - Satoshi Fujii
- Pathology Division, Research Center for Innovative Oncology, National Cancer Center Hospital East, Kashiwa, Japan
| | - Keisuke Hori
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, Kashiwa, Japan
| | - Yasuhiro Oono
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, Kashiwa, Japan
| | - Tomonori Yano
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, Kashiwa, Japan
| | - Kazuhiro Kaneko
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, Kashiwa, Japan
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Gotoda T, Hori K, Iwamuro M, Kono Y, Miura K, Kanzaki H, Kawano S, Kawahara Y, Okada H. Evaluation of the bleeding risk with various antithrombotic therapies after gastric endoscopic submucosal dissection. Endosc Int Open 2017; 5:E653-E662. [PMID: 28691050 PMCID: PMC5500108 DOI: 10.1055/s-0043-110050] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/24/2016] [Accepted: 03/02/2017] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND AND STUDY AIMS Patients receiving antithrombotic drugs have a higher risk of postoperative bleeding and thromboembolic events related to endoscopic procedures. The aim of this study was to evaluate the relationship between various antithrombotic therapies and bleeding after gastric endoscopic submucosal dissection (ESD) (post-ESD bleeding). PATIENTS AND METHODS Among 529 consecutive gastric ESD procedures (483 patients with 579 legions), 100 patients with 121 lesions who underwent 108 procedures were on antithrombotic therapy (group A) and 382 patients with 458 lesions who underwent 421 procedures were not on antithrombotic therapy (group B). The ratio of post-ESD bleeding between the two groups and the bleeding risk related to various antithrombotic therapies were investigated. RESULTS Postoperative bleeding was more frequent in group A (11.1 %) than in group B (3.3 %). No thromboembolic events were reported in either group. Further investigation of antithrombotic therapies in group A demonstrated that various combinations of antithrombotic agents and heparin replacement were associated with a higher ratio of post-ESD bleeding. Multivariate analyses revealed that dual antiplatelet therapy (odds ratio [OR] 10.9, 95 % confidence interval [CI] 2.1 - 49.5; P = 0.005) and heparin replacement (OR 34.4, 95 %CI 9.4 - 133.2; P < 0.001) were associated with the increased risk of post-ESD bleeding. In patients on antiplatelet therapy, post-ESD bleeding tended to occur in the early postoperative period compared with patients on anticoagulant therapy. CONCLUSIONS It is necessary to be cautious regarding post-ESD bleeding in patients requiring antithrombotic therapy, especially patients receiving dual antiplatelet therapy and heparin replacement. A further prospective study with a large sample will be needed to confirm these findings.
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Affiliation(s)
- Tatsuhiro Gotoda
- Department of Gastroenterology and Hepatology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Keisuke Hori
- Department of Gastroenterology and Hepatology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan,Corresponding author Keisuke Hori, MD, PhD Department of Gastroenterology and HepatologyOkayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences2–5–1 Shikata-choOkayama 700–8558Japan+81-86-2255991
| | - Masaya Iwamuro
- Department of Gastroenterology and Hepatology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Yoshiyasu Kono
- Department of Gastroenterology and Hepatology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Kou Miura
- Department of Gastroenterology and Hepatology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Hiromitsu Kanzaki
- Department of Gastroenterology and Hepatology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Seiji Kawano
- Department of Gastroenterology and Hepatology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Yoshiro Kawahara
- Department of Endoscopy, Okayama University Hospital, Okayama, Japan
| | - Hiroyuki Okada
- Department of Gastroenterology and Hepatology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan,Department of Endoscopy, Okayama University Hospital, Okayama, Japan
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Miyamoto M, Hori K, Goshima T, Takaya N, Oumi Y, Uemiya S. An Organoselective Zirconium-Based Metal-Organic-Framework UiO-66 Membrane for Pervaporation. Eur J Inorg Chem 2017. [DOI: 10.1002/ejic.201700010] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Manabu Miyamoto
- Department of Chemistry and Biomolecular Science; Gifu University; 1-1 Yanagido 501-1193 Gifu Japan
| | - Keisuke Hori
- Department of Materials Science and Technology; Gifu University; 1-1 Yanagido 501-1193 Gifu Japan
| | - Tatsumasa Goshima
- Department of Materials Science and Technology; Gifu University; 1-1 Yanagido 501-1193 Gifu Japan
| | - Naoki Takaya
- Department of Materials Science and Technology; Gifu University; 1-1 Yanagido 501-1193 Gifu Japan
| | - Yasunori Oumi
- Division of Instrument Analysis; Life Science Research Center; Gifu University; 1-1 Yanagido 501-1193 Gifu Japan
| | - Shigeyuki Uemiya
- Department of Chemistry and Biomolecular Science; Gifu University; 1-1 Yanagido 501-1193 Gifu Japan
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Yokoyama A, Katada C, Yokoyama T, Yano T, Kaneko K, Oda I, Shimizu Y, Doyama H, Koike T, Takizawa K, Hirao M, Okada H, Yoshii T, Konishi K, Yamanouchi T, Tsuda T, Omori T, Kobayashi N, Suzuki H, Tanabe S, Hori K, Nakayama N, Kawakubo H, Ishikawa H, Muto M. Alcohol abstinence and risk assessment for second esophageal cancer in Japanese men after mucosectomy for early esophageal cancer. PLoS One 2017; 12:e0175182. [PMID: 28384229 PMCID: PMC5383267 DOI: 10.1371/journal.pone.0175182] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2016] [Accepted: 03/21/2017] [Indexed: 01/01/2023] Open
Abstract
BACKGROUND Alcohol consumption combined with inactive aldehyde dehydrogenase-2 (ALDH2) and the presence of multiple esophageal Lugol-voiding lesions (LVLs; dysplasia) are strong predictors for multiple development of esophageal squamous cell carcinoma (ESCC) in East Asians. We invented a health risk appraisal (HRA) model for predicting the risk of ESCC based on drinking, smoking, dietary habits, and alcohol flushing, i.e., past or present facial flushing after drinking a glass of beer, a surrogate marker for inactive ALDH2. METHODS Prospective follow-up examinations (median follow-up time, 50.3 months) were performed in 278 Japanese men after endoscopic mucosectomy for early ESCC (UMIN Clinical Trials Registry ID: UMIN000001676). RESULTS Sixty-four subjects developed metachronous ESCC. A receiver operating characteristic curve showed that HRA scores ≥12 best predicted the development of metachronous ESCC. The ESCC detection rate per 100 person-years was 9.8 in the high-HRA-score group (n = 104) and 4.5 in the low-HRA-score group (n = 174), and the risk of development of metachronous ESCC was higher in the high-HRA-score group than in the low-HRA-score group (adjusted hazard ratio: 2.00 [95% CI: 1.12-3.30]). Multiple LVLs was a very strong predictor of the development of metachronous SCC, but high HRA scores predicted it independently. The cumulative incidences of metachronous ESCC decreased after drinking cessation in the high-HRA-score drinker group (adjusted hazard ratio: 0.37 [0.14-0.97]). CONCLUSIONS Both the HRA model that included alcohol flushing and the multiple LVL grade predicted the development of metachronous ESCC in Japanese men after endoscopic mucosectomy for ESCC. Drinking cessation in the high-HRA-score drinker group reduced the rate of metachronous ESCC.
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Affiliation(s)
- Akira Yokoyama
- National Hospital Organization Kurihama Medical and Addiction Center, Kanagawa, Japan
| | - Chikatoshi Katada
- Department of Gastroenterology, Kitasato University School of Medicine, Kanagawa, Japan
| | - Tetsuji Yokoyama
- Department of Health Promotion, National Institute of Public Health, Saitama, Japan
| | - Tomonori Yano
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, Chiba, Japan
| | - Kazuhiro Kaneko
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, Chiba, Japan
| | - Ichiro Oda
- Endoscopy Division, National Cancer Center Hospital, Tokyo, Japan
| | - Yuichi Shimizu
- Department of Gastroenterology, Hokkaido University Graduate School of Medicine, Kokkaido, Japan
| | - Hisashi Doyama
- Department of Gastroenterology, Ishikawa Prefectural Central Hospital, Ishikawa, Japan
| | - Tomoyuki Koike
- Division of Gastroenterology, Tohoku University Graduate School of Medicine, Miyagi, Japan
| | - Kohei Takizawa
- Division of Endoscopy, Shizuoka Cancer Center, Shizuoka, Japan
| | - Motohiro Hirao
- Department of Surgery, National Hospital Organization Osaka National Hospital, Osaka, Japan
| | - Hiroyuki Okada
- Department of Gastroenterology and Hepatology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Takako Yoshii
- Department of Gastroenterology, Kanagawa Cancer Center, Kanagawa, Japan
| | - Kazuo Konishi
- Division of Gastroenterology, Department of Medicine, Showa University School of Medicine, Tokyo, Japan
| | - Takenori Yamanouchi
- Department of Gastroenterology, Kumamoto Regional Medical Center, Kumamoto, Japan
| | - Takashi Tsuda
- Department of Clinical Oncology, St. Marianna University School of Medicine, Kanagawa, Japan
| | - Tai Omori
- Endoscopy Center, Kawasaki Municipal Ida Hospital, Kanagawa, Japan
| | - Nozomu Kobayashi
- Department of Diagnostic Imaging, Tochigi Cancer Center, Tochigi, Japan
| | - Haruhisa Suzuki
- Endoscopy Division, National Cancer Center Hospital, Tokyo, Japan
| | - Satoshi Tanabe
- Research and Development Center for New Frontiers, Kitasato University School of Medicine, Kanagawa, Japan
| | - Keisuke Hori
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, Chiba, Japan
| | - Norisuke Nakayama
- Department of Gastroenterology, Kanagawa Cancer Center, Kanagawa, Japan
| | - Hirofumi Kawakubo
- Department of Surgery, Keio University School of Medicine, Tokyo, Japan
| | - Hideki Ishikawa
- Department of Molecular-Targeting Cancer Prevention, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Manabu Muto
- Department of Therapeutic Oncology, Kyoto University Graduate School of Medicine, Kyoto, Japan
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Kono Y, Matsubara M, Toyokawa T, Takenaka R, Suzuki S, Nasu J, Yoshioka M, Nakagawa M, Mizuno M, Sakae H, Abe M, Gotoda T, Miura K, Kanzaki H, Iwamuro M, Hori K, Tsuzuki T, Kita M, Kawano S, Kawahara Y, Okada H. Erratum to: Multicenter Prospective Study on the Safety of Upper Gastrointestinal Endoscopic Procedures in Antithrombotic Drug Users. Dig Dis Sci 2017; 62:1101-1102. [PMID: 28210907 DOI: 10.1007/s10620-017-4486-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/09/2022]
Affiliation(s)
- Yoshiyasu Kono
- Department of Gastroenterology and Hepatology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, 2-5-1 Shikata-cho, Kita-ku, Okayama, 700-8558, Japan.
| | - Minoru Matsubara
- Department of Internal Medicine, Sumitomo Bessi Hospital, Niihama, 792-8543, Japan
| | - Tatsuya Toyokawa
- Department of Gastroenterology, National Hospital Organization, Fukuyama Medical Center, Fukuyama, 720-8520, Japan
| | - Ryuta Takenaka
- Department of Gastroenterology, Tsuyama Chuo Hospital, Tsuyama, 708-0841, Japan
| | - Seiyu Suzuki
- Department of Internal Medicine, Sumitomo Bessi Hospital, Niihama, 792-8543, Japan
| | - Junichirou Nasu
- Department of Internal Medicine, Okayama Saiseikai General Hospital, Okayama, 700-8551, Japan
| | - Masao Yoshioka
- Department of Internal Medicine, Okayama Saiseikai General Hospital, Okayama, 700-8551, Japan
| | - Masahiro Nakagawa
- Department of Internal Medicine, Hiroshima City Hospital, Hiroshima, 730-8518, Japan
| | - Motowo Mizuno
- Department of Internal Medicine, Hiroshima City Hospital, Hiroshima, 730-8518, Japan.,Department of Internal Medicine, Kurashiki Central Hospital, Kurashiki, 710-8602, Japan
| | - Hiroyuki Sakae
- Department of Gastroenterology and Hepatology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, 2-5-1 Shikata-cho, Kita-ku, Okayama, 700-8558, Japan
| | - Makoto Abe
- Department of Gastroenterology and Hepatology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, 2-5-1 Shikata-cho, Kita-ku, Okayama, 700-8558, Japan
| | - Tatsuhiro Gotoda
- Department of Gastroenterology and Hepatology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, 2-5-1 Shikata-cho, Kita-ku, Okayama, 700-8558, Japan
| | - Ko Miura
- Department of Gastroenterology and Hepatology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, 2-5-1 Shikata-cho, Kita-ku, Okayama, 700-8558, Japan
| | - Hiromitsu Kanzaki
- Department of Gastroenterology and Hepatology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, 2-5-1 Shikata-cho, Kita-ku, Okayama, 700-8558, Japan
| | - Masaya Iwamuro
- Department of Gastroenterology and Hepatology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, 2-5-1 Shikata-cho, Kita-ku, Okayama, 700-8558, Japan
| | - Keisuke Hori
- Department of Gastroenterology and Hepatology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, 2-5-1 Shikata-cho, Kita-ku, Okayama, 700-8558, Japan
| | - Takao Tsuzuki
- Department of Internal Medicine, Japanese Red Cross Society Himeji Hospital, Himeji, 670-8540, Japan
| | - Masahide Kita
- Department of Internal Medicine, Okayama City Hospital, Okayama, 700-0833, Japan
| | - Seiji Kawano
- Department of Gastroenterology and Hepatology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, 2-5-1 Shikata-cho, Kita-ku, Okayama, 700-8558, Japan
| | - Yoshiro Kawahara
- Department of Endoscopy, Okayama University Hospital, Okayama, 700-8558, Japan
| | - Hiroyuki Okada
- Department of Gastroenterology and Hepatology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, 2-5-1 Shikata-cho, Kita-ku, Okayama, 700-8558, Japan
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Miura K, Okada H, Kouno Y, Kanzaki H, Iwamuro M, Hori K, Kita M, Kawano S, Kawahara Y, Tanaka T, Yanai H. Actual Status of Involvement of Helicobacter pylori Infection That Developed Gastric Cancer from Group A of ABC (D) Stratification - Study of Early Gastric Cancer Cases That Underwent Endoscopic Submucosal Dissection. Digestion 2017; 94:17-23. [PMID: 27332718 DOI: 10.1159/000446771] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/01/2016] [Accepted: 05/11/2016] [Indexed: 02/04/2023]
Abstract
BACKGROUND/AIMS Patients who are Helicobacter pylori antibody negative and have normal pepsinogen (PG) levels (group A of ABC (D) stratification) are considered unlikely to develop gastric cancer. This study aimed to clarify the involvement (uninfection, present infection or previous infection) of H. pylori in group A patients with early gastric cancer who underwent endoscopic submucosal dissection (ESD) by examining their background gastric mucosa endoscopically and histologically. METHODS This study included 166 patients with gastric cancer who were treated by ESD. Patients were classified according to PG levels and H. pylori antibody titers. Three biopsies (greater curvature of the antrum, lesser curvature of the middle corpus and greater curvature of the middle corpus) from group A were histologically analyzed and compared with those of groups B, C, D and after eradication). RESULTS In group A (34 patients), 32 patients had endoscopic atrophy (group A'). Histological neutrophil activity, chronic inflammation and atrophy scores were lower in group A' than in other groups. Group A' scores were similar to those of the after eradication group. CONCLUSION Most of the group A patients with early gastric cancer were not uninfected with H. pylori, but had previous infections, thus carrying carcinogenic risk.
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Affiliation(s)
- Ko Miura
- Department of Gastroenterology and Hepatology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
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