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Majima T, Mizutani S, Mizunami Y, Kitajima K, Tsuchida H, Saito M. Fast-ion-induced secondary ion emission from submicron droplet surfaces studied using a new coincidence technique with forward-scattered projectiles. J Chem Phys 2020; 153:224201. [DOI: 10.1063/5.0032301] [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] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- T. Majima
- Department of Nuclear Engineering, Kyoto University, Kyoto 615-8540, Japan
| | - S. Mizutani
- Department of Nuclear Engineering, Kyoto University, Kyoto 615-8540, Japan
| | - Y. Mizunami
- Department of Nuclear Engineering, Kyoto University, Kyoto 615-8540, Japan
| | - K. Kitajima
- Department of Nuclear Engineering, Kyoto University, Kyoto 615-8540, Japan
| | - H. Tsuchida
- Department of Nuclear Engineering, Kyoto University, Kyoto 615-8540, Japan
- Quantum Science and Engineering Center, Kyoto University, Uji 611-0011, Japan
| | - M. Saito
- Department of Nuclear Engineering, Kyoto University, Kyoto 615-8540, Japan
- Quantum Science and Engineering Center, Kyoto University, Uji 611-0011, Japan
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Nakajo M, Kitajima K, Kaida H, Morita T, Minamimoto R, Ishibashi M, Yoshiura T. The clinical value of PERCIST to predict tumour response and prognosis of patients with oesophageal cancer treated by neoadjuvant chemoradiotherapy. Clin Radiol 2020; 75:79.e9-79.e18. [DOI: 10.1016/j.crad.2019.09.132] [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] [Received: 05/03/2019] [Accepted: 09/12/2019] [Indexed: 12/17/2022]
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Fujimoto Y, Higuchi T, Watanabe T, Hida AI, Imamura M, Kitajima K, Miyoshi Y. Abstract P2-08-35: A significance of SUVmax levels on FDG-PET as a prognostic factor may be mediated by local immune environment of breast cancer. Cancer Res 2019. [DOI: 10.1158/1538-7445.sabcs18-p2-08-35] [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) SUVmax levels (maximum radioactivity concentration per a pixel) on FDG-PET reflect glucose uptake and it is clinically useful as a prognostic factor. It is reported that breast cancer with high levels of SUVmax causes insufficient glucose concentration in stromal tissue, which results in suppressed cytotoxic T-lymphocytes function. These data may indicate that the prognostic significance of SUVmax levels is influenced by local immune environment of breast cancer. The aim of this study is to investigate whether local immune responses of breast cancer affect correlation of SUVmax levels and prognosis.
(Method) The 278 invasive breast cancer patients were recruited who underwent surgery at Hyogo College of Medicine Hospital and whose SUVmax levels in the breast were examined before surgery or neo-adjuvant therapy. The cutoff value of SUVmax levels was set at 3.585. Tumor infiltrate lymphocytes (TILs) were evaluated as a local immune response and the distributions of TILs were divided into three groups, inflamed (intra-tumoral lymphocytes, Inf), immune excluded (peri-tumoral lymphocytes, IE) and immune desert (very few lymphocytes, ID). During follow-up period (median 39 months), 21 patients relapsed.
(Results) Relapse free survival (RFS) in the SUVmax-high group was significantly worse than in the SUVmax–low group (p=0.0026). There was no correlation between TILs distribution patterns and RFS. In the IE+ID group (175 patients) SUVmax levels were not correlated with prognosis, but in the Inf group (103 patients) RFS of SUVmax-high was significantly worse than of SUVmax-low (p=0.0051). In the multivariate analysis including nodal status and nuclear grade, SUVmax levels of the Inf group was an independent prognostic factor.
(Discussion and conclusion) SUVmax levels in primary lesions were correlated with prognosis only in the Inf group and were not in the IE+ID group. A significance of SUVmax levels as a prognostic factor may be diverse depending on the local immune environment of breast cancer. A novel therapeutic strategy such as inducing suppression of glucose uptake in cancer cells is suggested for breast cancer with immune inflamed.
Citation Format: Fujimoto Y, Higuchi T, Watanabe T, Hida AI, Imamura M, Kitajima K, Miyoshi Y. A significance of SUVmax levels on FDG-PET as a prognostic factor may be mediated by local immune environment of breast cancer [abstract]. In: Proceedings of the 2018 San Antonio Breast Cancer Symposium; 2018 Dec 4-8; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2019;79(4 Suppl):Abstract nr P2-08-35.
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Affiliation(s)
- Y Fujimoto
- Hyogo Colloge of Medicine, Nishinomiya, Japan; Kagoshima University Graduate School of Medical and Dental Sciences, Kagoshima, Japan
| | - T Higuchi
- Hyogo Colloge of Medicine, Nishinomiya, Japan; Kagoshima University Graduate School of Medical and Dental Sciences, Kagoshima, Japan
| | - T Watanabe
- Hyogo Colloge of Medicine, Nishinomiya, Japan; Kagoshima University Graduate School of Medical and Dental Sciences, Kagoshima, Japan
| | - AI Hida
- Hyogo Colloge of Medicine, Nishinomiya, Japan; Kagoshima University Graduate School of Medical and Dental Sciences, Kagoshima, Japan
| | - M Imamura
- Hyogo Colloge of Medicine, Nishinomiya, Japan; Kagoshima University Graduate School of Medical and Dental Sciences, Kagoshima, Japan
| | - K Kitajima
- Hyogo Colloge of Medicine, Nishinomiya, Japan; Kagoshima University Graduate School of Medical and Dental Sciences, Kagoshima, Japan
| | - Y Miyoshi
- Hyogo Colloge of Medicine, Nishinomiya, Japan; Kagoshima University Graduate School of Medical and Dental Sciences, Kagoshima, Japan
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Doi H, Fujiwara M, Kitajima K, Tanooka M, Terada T, Noguchi K, Ishikura R, Kamikonya N, Yamakado K. EP-1119: Comparison between T staging and FDG-PET for predicting outcomes of maxillary sinus carcinoma. Radiother Oncol 2018. [DOI: 10.1016/s0167-8140(18)31429-4] [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: 11/26/2022]
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Imai N, Shibagaki Y, Yazawa M, Kitajima K, Nakazawa R, Sasaki H, Chikaraishi T. Follow-up rates of living kidney donor in Japan: A single center study. Indian J Nephrol 2016; 26:423-426. [PMID: 27942174 PMCID: PMC5131381 DOI: 10.4103/0971-4065.172229] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [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] [Indexed: 01/10/2023] Open
Abstract
Long-term follow-up of kidney donors is needed not only for the individual donor's benefit but also to establish analyzable databases to improve the selection criteria for future donors. We collected data including the date of transplantation, the date of the last follow-up, donor's age, sex, their relationship to the recipient, renal function, proteinuria, and the prevalence of hypertension. Of 124 donors, 52 donors were not being followed up. The mean duration of follow-up was 4.3 ± 3.6 years. Follow-up rates were 83.9%, 74.6%, and 59.2% at 1 year, 2 years, and 5 years postdonation, respectively. Of those not being followed up, 75% dropped out. Follow-up rates did not differ between parent and spouse donors 5 years (57.1% vs. 71.4%; P = 0.4) postdonation. Similarly, follow-up rates at 5 years did not differ between donors aged 60 years or older and those younger than 60 (57.5% vs. 61.3%; P = 0.6). Of 72 donors being followed up, 75.0% had estimated glomerular filtration rate of <60 mL/min/1.73 m2, 8.3% had proteinuria, and 41.7% had hypertension requiring medication. There is a limitation to the endeavor of each transplant center to follow-up all their donors. Long-term donor follow-up in Japan requires a national registration system and mandates transplant center participation.
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Affiliation(s)
- N Imai
- Department of Internal Medicine, St. Marianna University School of Medicine, Kawasaki, Kanagawa, Japan
| | - Y Shibagaki
- Department of Internal Medicine, St. Marianna University School of Medicine, Kawasaki, Kanagawa, Japan
| | - M Yazawa
- Department of Internal Medicine, St. Marianna University School of Medicine, Kawasaki, Kanagawa, Japan
| | - K Kitajima
- Department of Urology, St. Marianna University School of Medicine, Kawasaki, Kanagawa, Japan
| | - R Nakazawa
- Department of Urology, St. Marianna University School of Medicine, Kawasaki, Kanagawa, Japan
| | - H Sasaki
- Department of Urology, St. Marianna University School of Medicine, Kawasaki, Kanagawa, Japan
| | - T Chikaraishi
- Department of Urology, St. Marianna University School of Medicine, Kawasaki, Kanagawa, Japan
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Doi H, Matsumoto S, Odawara S, Shikata T, Tanooka M, Kitajima K, Takada Y, Fujiwara M, Tsujimura T, Kamikonya N, Hirota S. Pravastatin Reduces Radiation-Induced Damage to Normal Tissues. Int J Radiat Oncol Biol Phys 2016. [DOI: 10.1016/j.ijrobp.2016.06.2031] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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7
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Ogawa Y, Kojima K, Mannami R, Mannami M, Kitajima K, Nishi M, Ito S, Mitsuhata N, Afuso H. Transplantation of Restored Kidneys From Unrelated Donors After Resection of Renal Cell Carcinoma: Results From 10 Patients. Transplant Proc 2016; 47:1711-9. [PMID: 26293039 DOI: 10.1016/j.transproceed.2015.06.030] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2015] [Accepted: 06/02/2015] [Indexed: 02/06/2023]
Abstract
PURPOSE To relieve the chronic shortage of donor kidneys, we conducted a prospective kidney transplantation trial using kidneys removed from 10 unrelated patients (51 to 79 years of age) who had undergone nephrectomy for small renal cell carcinoma (1.5 to 3.9 cm) of low-to-moderate complexity based on RENAL (radius, exophytic/endophytic properties, nearness of tumor to the collecting system or sinus in millimeters, anterior/posterior location relative to polar lines) nephrometry (objective description helpful for operative indication and planning). METHODS Donors were selected from among 15 patients who opted to undergo nephrectomy for small renal cell carcinoma. A total of 76 dialysis patients 34 to 85 years of age who agreed to undergo restored kidney transplantation were recruited as transplant candidates. RESULTS In stage 1 (5 cases), high-risk patients were selected without human leukocyte antigen testing, and accelerated acute rejection occurred in 4 of 5 recipients. This trial was subsequently extended with human leukocyte antigen testing, and an additional 5 patients were enrolled in stage 2. Eight recipients, including 4 recipients with a history of renal transplantation, experienced rejection; 1 patient resumed dialysis 35 months after transplantation. The most recent serum creatinine levels ranged from 1.10 to 3.19 mg/dL in the 9 recipients with functioning grafts and from 0.84 to 4.68 mg/dL in the 10 donors. No tumor recurrence was noted at 32 to 58 months after surgery in either the recipients or the donors. CONCLUSIONS Restored kidney transplantation using kidneys with a small renal tumor seems suitable for carefully selected high-risk recipients and, in particular, elderly kidneys can also function well. Avoiding cancer transmission, fair recipient selection, close follow-up, and a well-organized tracking system warrant further study.
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Affiliation(s)
- Y Ogawa
- Department of Urology, Tokyo-West Tokushukai Hospital, Akishima-city, Tokyo-to, Japan.
| | - K Kojima
- Department of Urology, Uwajima Tokushukai Hospital, Uwajima-city, Japan
| | - R Mannami
- Department of Urology, Uwajima Tokushukai Hospital, Uwajima-city, Japan
| | - M Mannami
- Department of Urology, Uwajima Tokushukai Hospital, Uwajima-city, Japan
| | - K Kitajima
- Department of Urology, Kagoshima Tokushukai Hospital, Kagoshima-city, Japan
| | - M Nishi
- Department of Urology, Saint Martin's Hospital, Sakaide-city, Japan
| | - S Ito
- Department of Urology, Kure-Kyosai Hospital, Kure-city, Japan
| | - N Mitsuhata
- Department of Urology, Kure-Kyosai Hospital, Kure-city, Japan
| | - H Afuso
- Department of Urology, Okinawa Chubu Tokushukai Hospital, Okinawa-city, Japan
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Williford KH, Ushikubo T, Lepot K, Kitajima K, Hallmann C, Spicuzza MJ, Kozdon R, Eigenbrode JL, Summons RE, Valley JW. Carbon and sulfur isotopic signatures of ancient life and environment at the microbial scale: Neoarchean shales and carbonates. Geobiology 2016; 14:105-28. [PMID: 26498593 DOI: 10.1111/gbi.12163] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/17/2015] [Accepted: 08/28/2015] [Indexed: 05/22/2023]
Abstract
An approach to coordinated, spatially resolved, in situ carbon isotope analysis of organic matter and carbonate minerals, and sulfur three- and four-isotope analysis of pyrite with an unprecedented combination of spatial resolution, precision, and accuracy is described. Organic matter and pyrite from eleven rock samples of Neoarchean drill core express nearly the entire range of δ(13) C, δ(34) S, Δ(33) S, and Δ(36) S known from the geologic record, commonly in correlation with morphology, mineralogy, and elemental composition. A new analytical approach (including a set of organic calibration standards) to account for a strong correlation between H/C and instrumental bias in SIMS δ(13) C measurement of organic matter is identified. Small (2-3 μm) organic domains in carbonate matrices are analyzed with sub-permil accuracy and precision. Separate 20- to 50-μm domains of kerogen in a single ~0.5 cm(3) sample of the ~2.7 Ga Tumbiana Formation have δ(13) C = -52.3 ± 0.1‰ and -34.4 ± 0.1‰, likely preserving distinct signatures of methanotrophy and photoautotrophy. Pyrobitumen in the ~2.6 Ga Jeerinah Formation and the ~2.5 Ga Mount McRae Shale is systematically (13) C-enriched relative to co-occurring kerogen, and associations with uraniferous mineral grains suggest radiolytic alteration. A large range in sulfur isotopic compositions (including higher Δ(33) S and more extreme spatial gradients in Δ(33) S and Δ(36) S than any previously reported) are observed in correlation with morphology and associated mineralogy. Changing systematics of δ(34) S, Δ(33) S, and Δ(36) S, previously investigated at the millimeter to centimeter scale using bulk analysis, are shown to occur at the micrometer scale of individual pyrite grains. These results support the emerging view that the dampened signature of mass-independent sulfur isotope fractionation (S-MIF) associated with the Mesoarchean continued into the early Neoarchean, and that the connections between methane and sulfur metabolism affected the production and preservation of S-MIF during the first half of the planet's history.
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Affiliation(s)
- K H Williford
- Department of Geoscience, University of Wisconsin, Madison, WI, USA
- NASA Astrobiology Institute, University of Wisconsin, Madison, WI, USA
- Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, USA
| | - T Ushikubo
- Department of Geoscience, University of Wisconsin, Madison, WI, USA
- NASA Astrobiology Institute, University of Wisconsin, Madison, WI, USA
| | - K Lepot
- Department of Geoscience, University of Wisconsin, Madison, WI, USA
- NASA Astrobiology Institute, University of Wisconsin, Madison, WI, USA
| | - K Kitajima
- Department of Geoscience, University of Wisconsin, Madison, WI, USA
- NASA Astrobiology Institute, University of Wisconsin, Madison, WI, USA
| | - C Hallmann
- Earth, Atmospheric and Planetary Science Department, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - M J Spicuzza
- Department of Geoscience, University of Wisconsin, Madison, WI, USA
- NASA Astrobiology Institute, University of Wisconsin, Madison, WI, USA
| | - R Kozdon
- Department of Geoscience, University of Wisconsin, Madison, WI, USA
- NASA Astrobiology Institute, University of Wisconsin, Madison, WI, USA
| | - J L Eigenbrode
- Planetary Environments Laboratory, NASA Goddard Space Flight Center, Greenbelt, MD, USA
| | - R E Summons
- NASA Astrobiology Institute, University of Wisconsin, Madison, WI, USA
- Earth, Atmospheric and Planetary Science Department, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - J W Valley
- Department of Geoscience, University of Wisconsin, Madison, WI, USA
- NASA Astrobiology Institute, University of Wisconsin, Madison, WI, USA
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Kitahara M, Kitajima K. Intramastoid drainage surgery for Ménière's disease--critical analysis of variation of surgical results for Ménière's disease. Adv Otorhinolaryngol 2015; 42:269-74. [PMID: 3213740 DOI: 10.1159/000416121] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- M Kitahara
- Department of Otolaryngology, Shiga University of Medical Science, Otsu, Japan
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Kitajima K, Kamimura O, Nagao T, Takahashi I, Hiraki K. Neocarzinostatin: a new agent active in the treatment of acute leukemia. Bibl Haematol 2015:751-2. [PMID: 126059 DOI: 10.1159/000397597] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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Ueno Y, Takahashi S, Ohno Y, Kitajima K, Yui M, Kassai Y, Kawakami F, Miyake H, Sugimura K. Computed diffusion-weighted MRI for prostate cancer detection: the influence of the combinations of b-values. Br J Radiol 2015; 88:20140738. [PMID: 25605347 DOI: 10.1259/bjr.20140738] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
OBJECTIVE To evaluate the influence of the combinations of b-values on computed diffusion-weighted images (cDWIs) for prostate cancer (PCa) detection at b = 2000 s mm(-2). METHODS Diffusion-weighted imaging (DWIs) for 31 patients with PCa (65.2 ± 7.1 years) were obtained pre-operatively at different b-values (0, 100, 500, 1000 and 2000 s mm(-2)) on a 3-T MRI. cDWIs at b = 2000 were generated by using six b-value combinations: 0-100 s mm(-2) (cDWI0-100); 0-500 s mm(-2) (cDWI0-500); 100-500 s mm(-2) (cDWI100-500); 0-1000 s mm(-2) (cDWI0-1000); 100-1000 s mm(-2) (cDWI100-1000); and 500-1000 s mm(-2) (cDWI500-1000). These cDWIs and measured DWIs with b = 2000 s mm(-2) (mDWI2000) were evaluated in this setting. To assess image quality for each DWI, contrast ratios (CRs) of cancerous and non-cancerous lesions were evaluated. To compare the detectability of PCa for each DWI, receiver operating characteristic analysis was used. RESULTS CRs of all cDWIs were significantly higher than those of mDWI2000 (p < 0.05). Areas under the curve of cDWI0-100 (0.62) and cDWI0-500 (0.65) were significantly smaller (p < 0.05) than those of others (cDWI100-500, 0.72; cDWI0-1000, 0.73; cDWI100-1000, 0.71; cDWI500-1000, 0.74; mDWI2000, 0.72). CONCLUSION The combinations of b-values influenced image quality and diagnostic ability of cDWIs for PCa detection. The combinations of b ≥ 100 and b ≥ 500 s mm(-2), as well as b = 0 and b = 1000 s mm(-2), were optimal in this study. ADVANCES IN KNOWLEDGE For generating the useful cDWI for PCa detection, radiologists should take care of the combination of b-values when including low b-values.
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Affiliation(s)
- Y Ueno
- 1 Department of Radiology, Kobe University Graduate School of Medicine, Kobe, Japan
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Harada A, Sasaki R, Miyawaki D, Yoshida K, Nishimura H, Ejima Y, Kitajima K, Saito M, Otsuki N, Nibu KI. Treatment outcomes of the patients with early glottic cancer treated with initial radiotherapy and salvaged by conservative surgery. Jpn J Clin Oncol 2014; 45:248-55. [DOI: 10.1093/jjco/hyu203] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [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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13
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Machishima K, Sakamoto M, Oshima C, Kitajima K, Koba T, Gohara R, Sato A, Higashiuchi J, Horikawa E. A-05 * The Effect of Mahjong on Healthy Elderly Persons' Cognitive Function. Arch Clin Neuropsychol 2014. [DOI: 10.1093/arclin/acu038.5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [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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14
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Makihara N, Maeda T, Ebina Y, Kitajima K, Kawakami F, Hara S, Yamada H. Leiomyosarcoma of the broad ligament: a case report with CT and MRI images. EUR J GYNAECOL ONCOL 2014; 35:174-177. [PMID: 24772923] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Primary leiomyosarcoma of the broad ligament is a very rare and highly malignant gynecological tumor. The authors report a 61-year-old postmenopausal woman with signs and symptoms of malignant ovarian tumor. Preoperative magnetic resonance imaging (MRI) was interpreted as being suspicious for malignant tumors, such as an ovarian cancer or a leiomyosarcoma of the broad ligament, so laparotomy was performed. Macroscopically, the tumor was revealed with a 18 x 13.7 x 9.5 cm degenerated, multiple cystic part and solid whitish part arising from broad ligament which on histopathology proved to be leiomyosarcoma. To the best of the authors' knowledge, primary leiomyosarcoma of the broad ligament has been documented in 21 reports or so, and no imaging findings are available. Here the authors present the MRI findings of primary leiomyosarcoma of the broad ligament.
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16
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Eyraud D, Ben Menna M, Vaillant JC, Kitajima K, Lebray P, Pavie A, Poynard T, Coriat P, Hannoun L. Perioperative management of combined heart-liver transplantation in patients with cirrhosis, renal insufficiency, or pulmonary hypertension. Clin Transplant 2011; 25:228-34. [DOI: 10.1111/j.1399-0012.2010.01240.x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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Tojimbara T, Fuchinoue S, Nakajima I, Kimikawa M, Kitajima K, Ishida H, Koyama I, Utsumi K, Sannomiya A, Tsuji K, Tanaka K, Takasaki K, Agishi T. Factors affecting survival after living-related liver transplantation. Transpl Int 2011. [DOI: 10.1111/j.1432-2277.2000.tb02003.x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Kitajima K, Murakami K, Kaji Y, Sakamoto S, Sugimura K. Established, emerging and future applications of FDG-PET/CT in the uterine cancer. Clin Radiol 2011; 66:297-307. [PMID: 21356392 DOI: 10.1016/j.crad.2010.07.012] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2010] [Revised: 07/12/2010] [Accepted: 07/18/2010] [Indexed: 10/18/2022]
Abstract
Integrated positron emission tomography/computed tomography (PET/CT) with 2-[¹⁸F]fluoro-2-deoxy-D-glucose (FDG) is a useful technique to acquire both glucose metabolic and anatomic imaging data using a single device in a single diagnostic session and has opened a new field in clinical oncologic imaging. FDG-PET/CT has been used successfully for the staging, optimization of treatment, re-staging, therapy monitoring, and prognostic prediction of uterine cervical cancer and endometrial cancer as well as various malignant tumours. The present review discusses the current role of FDG-PET/CT in the management of uterine cancer, discussing its usefulness and limitations in the imaging of these patients.
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Affiliation(s)
- K Kitajima
- PET Diagnosis, Institute of Biomedical Research and Innovation, Kobe, Japan.
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Nagase A, Kaneko H, Hatanaka T, Takyu H, Tanaka H, Natsume Y, Kitajima K, Noguchi H, Marukawa S. The incidence of shockable rhythm is low in the elderly: A nationwide population-based study. Resuscitation 2010. [DOI: 10.1016/j.resuscitation.2010.09.018] [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: 11/24/2022]
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Inoko E, Nishiura Y, Tanaka H, Takahashi T, Furukawa K, Kitajima K, Sato C. Developmental stage-dependent expression of an 2,8-trisialic acid unit on glycoproteins in mouse brain. Glycobiology 2010; 20:916-28. [DOI: 10.1093/glycob/cwq049] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Takenaka R, Matsuno O, Kitajima K, Ono E, Hiroshige S, Nishitake T, Miyazaki E, Kumamoto T. The use of frequency scale for the symptoms of GERD in assessment of gastro-oesophageal reflex symptoms in asthma. Allergol Immunopathol (Madr) 2010; 38:20-4. [PMID: 20092933 DOI: 10.1016/j.aller.2009.06.005] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2009] [Revised: 06/24/2009] [Accepted: 06/25/2009] [Indexed: 01/10/2023]
Abstract
In adult asthmatics the incidence of gastro-oesophageal reflux disease (GERD) reportedly ranges from 34% to 89%. Oesophageal pH monitoring and endoscopy are not required in the patient with typical GERD symptoms before the initiation of a therapeutic trial. Diagnosis of GERD on the basis of history is the simplest and quickest method, placing no demand on patients. Recently, a new questionnaire (FSSG; Frequency Scale for the Symptoms of GERD) was produced to evaluate the severity and the therapeutic response of GERD. The FSSG (F-scale) was used to assess the GERD in subjects with persistent moderate to severe asthma treated with anti-inflammatory asthma medication. In the present study, 27.4% of the patients with asthma had symptoms suggestive of GERD. There is significant correlation between GERD symptom (F-scale score) and severity of cough and sputum. The observations suggested that reflux symptoms, not gastric dysmotility symptoms, significantly associated with severity of cough, not of sputum. It is the first such study to use a FSSG as incidence of GERD symptoms in asthmatics and examine the relationship between F-scale score and asthmatic symptoms.
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Chikaraishi T, Sasaki H, Tsutsumi H, Miyano S, Nakazawa R, Nakano T, Kitajima K, Kudo H, Takahashi T, Sato Y, Kimura K. ABO blood type incompatible kidney transplantation without splenectomy prepared with plasma exchange and rituximab. Transplant Proc 2009; 40:3445-7. [PMID: 19100409 DOI: 10.1016/j.transproceed.2008.06.110] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2008] [Accepted: 06/16/2008] [Indexed: 12/28/2022]
Abstract
We have designed a protocol for ABO-incompatible kidney transplantations based on preoperative plasmapheresis with a tacrolimus/mycophenolate mofetil/methylprednisolone/basiliximab protocol using low-dose rituximab (200 mg/body) instead of splenectomy to prevent antibody-mediated acute rejection. Eight patients successfully received transplants with this protocol. The titers of anti-A and -B antibodies as well as the number of CD20(+) cells were readily maintained at a low level posttransplantation. There were no side effects. All patients have renal transplant function with a follow-up of 1-34 months.
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Affiliation(s)
- T Chikaraishi
- Department of Urology, St. Marianna University, Kawasaki, Kanagawa, Japan.
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23
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Sasaki H, Chikaraishi T, Furuhata S, Tsutsumi H, Miyano S, Nakazawa R, Nakano T, Kudo H, Kitajima K, Takahashi T, Satoh Y, Kimura K. Autologous Blood Transfusion for Kidney Transplant Recipients. Transplant Proc 2008; 40:1371-2. [DOI: 10.1016/j.transproceed.2008.03.136] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2007] [Accepted: 03/06/2008] [Indexed: 11/17/2022]
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24
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Kitajima K, Taboury J, Boleslawski E, Savier E, Vaillant JC, Hannoun L. Sonographic preoperative assessment of liver volume before major liver resection. ACTA ACUST UNITED AC 2008; 32:382-9. [PMID: 18403156 DOI: 10.1016/j.gcb.2008.02.007] [Citation(s) in RCA: 11] [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] [Subscribe] [Scholar Register] [Received: 06/25/2007] [Revised: 01/23/2008] [Accepted: 02/02/2008] [Indexed: 02/08/2023]
Abstract
OBJECTIVE The use of ultrasonography is widespread for both the diagnosis and treatment of liver tumors. However, the measurement of liver volume by ultrasonography is not commonly done. We report an original method of liver volumetry using ultrasonography and an investigation into the usefulness of ultrasonography in this context. METHODS The data for 50 patients undergoing various types of major hepatectomy were collected. We preoperatively measured liver volume using ultrasonography, dividing the liver into three main compartments according to precise anatomical landmarks, and then made comparisons with the volume of the actual specimen after hepatectomy, for all of the study participants. RESULTS Total volume correlation between the two groups was good (r = 0.916, P < 0.001). However, the correlation was weaker in cases of right hepatectomy compared with other types of hepatectomy. CONCLUSION This study demonstrates the possibility of doing liver volumetry using an ultrasound device. Further investigation to establish the reliability of this easily available and noninvasive approach is needed.
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Affiliation(s)
- K Kitajima
- Assistance Publique-Hôpitaux de Paris (AP-HP), Université Pierre-et-Marie-Curie Paris-VI, Hôpital de la Pitié-Salpêtrière, 47-83 Boulevard de l'Hôpital, 75651 Cedex 13 Paris, France.
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25
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Hirashima Y, Kitajima K, Sugi S, Kagawa K, Murakami K, Fujioka T, Kumamoto T. [Eosinophilic gastroenteritis in the esophagus, stomach, and small intestine in a patient with a choking feeling in the esophagus]. Nihon Shokakibyo Gakkai Zasshi 2007; 104:660-5. [PMID: 17485945] [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] [Indexed: 05/15/2023]
Abstract
A 75-year-old man was admitted to our hospital with the chief complaint of a choking feeling around the esophagus. Laboratory examinations revealed eosinophilia, and high levels of serum immunoglobulin (Ig) E. A computed tomography scan (CT) showed wall thickening of the esophagus and terminal ileum, and ascites around the liver. An endoscopic examination revealed mild mucosal edema in the esophagus, stomach, and small intestine. Biopsy specimens showed diffuse eosinophilic infiltration in the mucosa. We therefore diagnosed eosinophilic gastroenteritis. Oral prednisolone relieved clinical conditions and the CT image improved. This case was considered valuable, because there have been few reports of eosinophilic esophagitis in Japan.
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Affiliation(s)
- Yoshinori Hirashima
- Third Department of Internal Medicine, Oita University Faculty of Medicine, Japan
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26
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Hirashima Y, Kitajima K, Sugi S, Murakami K, Fujioka T, Kumamoto T. [Successful CPT-11 treatment in a patient with pancreatic cancer associated with multiple liver metastases and chronic renal failure]. Gan To Kagaku Ryoho 2007; 34:105-7. [PMID: 17220682] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
A 56-year-old woman, who had been receiving treatment for chronic renal failure, was admitted to our Department because of a tumor of the pancreas head and multiple liver masses diagnosed by abdominal CT scans. Gastroduodenoscopy revealed a tumor which had invaded the Vater's papilla; the lesion was histopathologically pancreatic adenocarcinoma. Due to the presence of multiple metastases to the liver, we therefore performed general chemotherapy after obtaining the patient's informed consent (IC). CPT-11 was selected as the carcinostatic agent because the patient suffered from renal failure. The initial dose of CPT-11 was 80 mg, and we thereafter made minor adjustments in the dosage depending on the occurrence of side effects. After four courses of the treatment, a CT scan revealed both the tumor of the pancreas head and the multiple liver masses to have almost completely disappeared. Our clinical results indicate that CPT-11 may therefore be a strong candidate for first-line chemotherapy for the treatment of pancreatic cancer, especially in patients with renal failure.
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Abstract
The purpose of the present study was to investigate porcine circovirus (PCV) shedding into the milk of sows. Colostrum was collected from 33 sows. PCV1 was isolated from four of 33 milk whey samples. PCV1 DNA was detected by polymerase chain reaction in three of these samples and in three of 10 milk cell samples. PCV2 was also isolated and detected from every single milk whey sample. These results showed that PCV1 and PCV2 were shed into the milk of sows and suggest that PCV can be transmitted to offspring by an oral route through milk.
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Affiliation(s)
- I Shibata
- Zen-Noh Institute of Animal Health, 7 Ohja-Machi, Sakura, Chiba 285-0043, Japan.
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Hirashima Y, Kitajima K, Sugi S, Kagawa K, Kumamoto T, Murakami K, Fujioka T, Noguchi T. [Successful bi-weekly paclitaxel treatment of an AFP-producing gastric cancer patient with peritoneal dissemination and multiple liver metastasis]. Gan To Kagaku Ryoho 2006; 33:517-9. [PMID: 16612165 DOI: 10.2217/14750708.3.4.517] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The patient was a 71-year-old man. Chemotherapy was conducted in two courses combining TS-1 (120 mg) and CDDP (80 mg) under the diagnosis of AFP-producing gastric cancer with multiple liver metastasis and peritoneal dissemination. Peritoneal dissemination disappeared, liver metastasis almost disappeared after completion of two courses, and the therapeutic efficacy was rated as PR. Then, the patient underwent distal gastrectomy and lymph node dissection. He received TS-1 monotherapy after surgery, but his condition gradually became worse. TS-1 and CDDP combination were given again, but an ileus resulted due to peritonitis carcinomatous. We therefore administered bi-weekly paclitaxel (80 mg/m(2)) intravenously. The ileus disappeared after one week, liver metastatic lesions and ascites were improved after completion of one course, and therapeutic efficacy was rated as PR. Grade 3 neutropenia and grade 1 alopecia occurred, but no other adverse reaction occurred. This therapy made it possible to eat foods, conduct chemotherapy safely while ambulatory. Paclitaxel can be expected to show good therapeutic efficacy and improve QOL of a peritonitis carcinomatosa patient with TS-1 resistant advanced gastric cancer.
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Mukawa K, Fujii S, Takeda J, Kitajima K, Tominaga K, Chibana Y, Fujita M, Ichikawa K, Tomita S, Ono Y, Imura J, Kawamata H, Chiba T, Hiraishi H, Terano A, Fujimori T. Analysis of K-ras mutations and expression of cyclooxygenase-2 and gastrin protein in laterally spreading tumors. J Gastroenterol Hepatol 2005; 20:1584-90. [PMID: 16174078 DOI: 10.1111/j.1440-1746.2005.03897.x] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/09/2022]
Abstract
BACKGROUND AND AIM Recent advances in colonoscopic techniques have led to the increased detection of, and interest in, superficial type colorectal tumors, and a new category, the 'laterally spreading tumor (LST)', has been proposed. However, the characteristics of the genetic alterations in these LSTs have not yet been fully determined. We therefore classified LSTs as LST-granular (LST-G) or LST-non-granular (LST-NG), according to their macroscopic appearance, and examined the genetic alterations in these two tumor groups compared with those in protruded type tumors. METHODS We obtained a total of 62 colorectal tumors, including 26 protruded type, 17 LST-G and 19 LST-NG, from specimens resected surgically or endoscopically. We examined K-ras codon 12 mutations by using the polymerase chain reaction-restriction fragment length polymorphism method and by fluorescence direct sequencing. We also performed immunohistochemistry to analyze cyclooxygenase (COX)-2 and gastrin abnormalities. RESULTS The incidence of K-ras mutation was 50.0% in protruded type tumors, 76.5% in LST-G, and 26.3% in LST-NG. The frequencies of COX-2 overexpression were 73.1, 88.2, and 31.6%, respectively, and those of gastrin overexpression were 61.5, 82.4, and 26.3%, respectively. Therefore, LST-G is similar to protruded type tumors in that the incidence of K-ras mutation and the frequencies of COX-2 and gastrin overexpression are high. LST-NG differs from both of these tumor types in that the values of these three indicators are all low. CONCLUSIONS These results show that LST-G and LST-NG have different genetic alterations.
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Affiliation(s)
- Kenichiroh Mukawa
- Department of Surgical and Molecular Pathology, Dokkyo University School of Medicine, Tochigi, Japan
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Fujii S, Tominaga K, Kitajima K, Takeda J, Kusaka T, Fujita M, Ichikawa K, Tomita S, Ohkura Y, Ono Y, Imura J, Chiba T, Fujimori T. Methylation of the oestrogen receptor gene in non-neoplastic epithelium as a marker of colorectal neoplasia risk in longstanding and extensive ulcerative colitis. Gut 2005; 54:1287-92. [PMID: 15870230 PMCID: PMC1774644 DOI: 10.1136/gut.2004.062059] [Citation(s) in RCA: 48] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
BACKGROUND Surveillance colonoscopy is widely recommended in patients with longstanding and extensive ulcerative colitis (UC) in order to detect colorectal neoplasia at an early stage. However, it still remains questionable whether surveillance colonoscopy effectively enables early detection of UC associated neoplasia. There is a great need for sensitive markers to identify individuals at increased risk of neoplasia. The oestrogen receptor (OR) gene shows age related methylation in the colorectal epithelium and is methylated frequently in sporadic colorectal neoplasia, suggesting that OR methylation may predispose to colorectal neoplasia. AIM To clarify whether analysis of methylation of the OR gene in non-neoplastic epithelium can contribute to prediction of increased neoplasia risk in UC patients. MATERIALS AND METHODS A total of 165 non-neoplastic colorectal epithelia from 30 patients with longstanding and extensive UC, including 13 UC patients with neoplasia and 17 patients without, were evaluated. Methylation specific polymerase chain reaction was performed to determine the methylation status of the OR gene. RESULTS Methylation of the OR gene was detected in 54 of 70 (77.1%) non-neoplastic colorectal epithelia in UC with neoplasia but in only 23 of 95 (24.2%) without neoplasia. Methylation of the OR gene was significantly more frequent in non-neoplastic epithelium from UC with neoplasia than in chronic colitic epithelium from UC without neoplasia. Furthermore, in UC with neoplasia, the OR gene was extensively methylated in non-neoplastic epithelia throughout the colorectum compared with those in UC without neoplasia. CONCLUSION These results suggest that analysis of OR gene methylation may have potential as a useful marker for identifying individuals at increased risk of neoplasia among those with longstanding and extensive UC.
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Affiliation(s)
- S Fujii
- Department of Surgical and Molecular Pathology, Dokkyo University School of Medicine, 880 Kitakobayashi, Mibu, Shimotsuga, Tochigi 321-0293, Japan.
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Nikonova EY, Tertov VV, Sato C, Kitajima K, Bovin NV. Specificity of human trans-sialidase as probed with gangliosides. Bioorg Med Chem Lett 2005; 14:5161-4. [PMID: 15380219 DOI: 10.1016/j.bmcl.2004.07.058] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2004] [Revised: 07/21/2004] [Accepted: 07/27/2004] [Indexed: 10/26/2022]
Abstract
It has been shown that human blood contains a soluble 67 kDa enzyme, belonging by its donor-acceptor properties to trans-sialidases. The enzyme is capable of both cleaving and synthesizing alpha2-3 and alpha2-6 sialosides [Atherosclerosis2001, 159, 103]. In this work the study of donor-acceptor specificity of the new enzyme was extended. It has been demonstrated in vitro that trans-sialidase possesses the ability of transferring Neu5Ac residue to acceptor (asialofetuin) both from alpha2-3- (GM1, GM3, GD1a), and alpha2-8-sialylated gangliosides (GD3 and GD1b, but not GT1b and GQ1b). Transfer of radiolabeled Neu5Ac from fetuin to glycosphingolipids demonstrated that Lac-Cer>mono- and disialogangliosides>GT1b>GQ1b were acceptors for this enzyme. Two methods were used to reveal whether alpha2-8 bond can be formed between Neu5Ac residues during trans-sialylation, that is immunochemical detection using monoclonal antibodies specific to alpha2-8 di- and oligosialic acids, and fluorometric C7/C9 analysis. Both methods demonstrated the formation of Neu5Acalpha2-8Neu5Ac termination by trans-sialidase, for example, in case of the use 3'SL as sialic acid donor and Neu5Ac-PAA or LDL as acceptor. Thus, human trans-sialidase in vitro displays wide substrate specificity: the enzyme is capable of digesting as well as synthesizing alpha2-3, alpha2-6, and alpha2-8 sialosides.
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Affiliation(s)
- E Yu Nikonova
- Shemyakin Institute of Bioorganic Chemistry, Russian Academy of Science, Moscow 117997, Russia
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32
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Ishii K, Kitajima K. Crit Care 2005; 9:P285. [DOI: 10.1186/cc3348] [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: 11/10/2022] Open
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Anuurad E, Shiwaku K, Enkhmaa B, Nogi A, Kitajima K, Yamasaki M, Yamane Y. Ethnic differences in the formation of small LDL particles in Asians: a comparison of Koreans, Japanese and Mongolians. Eur J Clin Invest 2004; 34:738-46. [PMID: 15530146 DOI: 10.1111/j.1365-2362.2004.01413.x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
BACKGROUND The presence of small, dense LDL particles has been recognized as an independent risk factor for coronary heart disease (CHD) but is not directly representative of CHD mortality rate beyond any given population. We investigated whether such inconsistency between three Asian ethnic groups might have arisen from anthropometric and metabolic factors. DESIGN We conducted a cross-sectional survey among adult Koreans (412), Japanese (453) and Mongolians (253). RESULTS The prevalence of small LDL particles was 36% in the Koreans, 21% in the Japanese and 7% in the Mongolians. Multiple logistic regression analysis revealed plasma triglyceride (TG) levels to be the strongest determinant of small LDL particle size in all three groups, with sex, HDL-cholesterol and non-HDL-C being other ethnic-specific significant determinants. Body mass index (BMI), FFA and insulin resistance were not significant factors in the regression analysis. Of the subjects with low TG levels (< 133 mg dL(-1)), 25% of the Koreans and 10% of the Japanese, but no Mongolians, had small LDL particles. CONCLUSIONS Results of the present study suggest that traditionally, high-carbohydrate diets in Korea and Japan possibly contribute to higher TG-levels compared with BMI-matched Mongolians, and to the formation of small LDL particles, even in instances of low TG levels.
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Affiliation(s)
- E Anuurad
- Department of Environmental and Preventive Medicine, Shimane University, School of Medicine, Izumo, Japan.
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Kitajima K, Fujimori T, Fujii S, Takeda J, Ohkura Y, Kawamata H, Kumamoto T, Ishiguro S, Kato Y, Shimoda T, Iwashita A, Ajioka Y, Watanabe H, Watanabe T, Muto T, Nagasako K. Correlations between lymph node metastasis and depth of submucosal invasion in submucosal invasive colorectal carcinoma: a Japanese collaborative study. J Gastroenterol 2004; 39:534-43. [PMID: 15235870 DOI: 10.1007/s00535-004-1339-4] [Citation(s) in RCA: 459] [Impact Index Per Article: 23.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/08/2004] [Accepted: 02/24/2004] [Indexed: 02/07/2023]
Abstract
BACKGROUND Depth of submucosal invasion (SM depth) in submucosal invasive colorectal carcinoma (SICC) is considered an important predictive factor for lymph node metastasis. However, no nationwide reports have clarified the relationship between SM depth and rate of lymph node metastasis. Our aim was to investigate the correlations between lymph node metastasis and SM depth in SICC. METHODS SM depth was measured for 865 SICCs that were surgically resected at six institutions throughout Japan. For pedunculated SICC, the level 2 line according to Haggitt's classification was used as baseline and the SM depth was measured from this baseline to the deepest portion in the submucosa. When the deepest portion of invasion was limited to above the baseline, the case was defined as a head invasion. For nonpedunculated SICC, when the muscularis mucosae could be identified, the muscularis mucosae was used as baseline and the vertical distance from this line to the deepest portion of invasion represented SM depth. When the muscularis mucosae could not be identified due to carcinomatous invasion, the superficial aspect of the SICC was used as baseline, and the vertical distance from this line to the deepest portion was determined. RESULTS For pedunculated SICC, rate of lymph node metastasis was 0% in head invasion cases and stalk invasion cases with SM depth <3000 micro m if lymphatic invasion was negative. For nonpedunculated SICC, rate of lymph node metastasis was also 0% if SM depth was <1000 micro m. CONCLUSIONS These results clarified rates of lymph node metastasis in SICC according to SM depth, and may contribute to defining therapeutic strategies for SICC.
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Affiliation(s)
- Kazuaki Kitajima
- Department of Surgical and Molecular Pathology, Dokkyo University School of Medicine, 880 Kitakobayashi, Mibu, Shimotsuga, 321-0293, Tochigi, Japan
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Fujii S, Fujimori T, Kawamata H, Takeda J, Kitajima K, Omotehara F, Kaihara T, Kusaka T, Ichikawa K, Ohkura Y, Ono Y, Imura J, Yamaoka S, Sakamoto C, Ueda Y, Chiba T. Development of colonic neoplasia in p53 deficient mice with experimental colitis induced by dextran sulphate sodium. Gut 2004; 53:710-6. [PMID: 15082590 PMCID: PMC1774053 DOI: 10.1136/gut.2003.028779] [Citation(s) in RCA: 52] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
BACKGROUND Several animal models for human ulcerative colitis (UC) associated neoplasia have been reported. However, most neoplasias developed in these models have morphological and genetic characteristics different from UC associated neoplasia. AIMS To establish a new colitis associated neoplasia model in p53 deficient mice by treatment with dextran sulphate sodium (DSS). METHODS DSS colitis was induced in homozygous p53 deficient mice (p53(-/-)-DSS), heterozygous p53 deficient mice (p53(+/-)-DSS) and wild-type mice (p53+/+-DSS) by treatment with 4% DSS. Numbers of developed neoplasias were compared among the experimental groups, and macroscopic and microscopic features of the neoplasias were analysed. Furthermore, K-ras mutation and beta-catenin expression were assessed. RESULTS p53(-/-)-DSS mice showed 100% incidence of neoplasias whereas the incidences in p53(+/-)-DSS and p53+/+-DSS mice were 46.2% and 13.3%, respectively. No neoplasias were observed in the control groups. The mean numbers of total neoplasias per mouse were 5.0 (p53(-/-)-DSS), 0.62 (p53(+/-)-DSS), and 0.2 (p53+/+-DSS). The number of neoplasias per mouse in the p53(-/-)-DSS group was significantly higher than that in the other DSS groups. The incidences of superficial type neoplasias were 91.7% in p53(-/-)-DSS mice, 75.0% in p53(+/-)-DSS mice, and 33.3% in p53+/+-DSS mice. The K-ras mutation was not detected in any of the neoplasias tested. Translocation of beta-catenin from the cell membrane to the cytoplasm or nucleus was observed in 19 of 23 (82.6%) neoplasias. CONCLUSIONS The p53(-/-)-DSS mice is an excellent animal model of UC associated neoplasia because the morphological features and molecular genetics are similar to those of UC associated neoplasia. Therefore, this model will contribute to the analysis of tumorigenesis related to human UC associated neoplasia and the development of chemopreventive agents.
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MESH Headings
- Animals
- Cell Transformation, Neoplastic/genetics
- Colitis, Ulcerative/chemically induced
- Colitis, Ulcerative/complications
- Colitis, Ulcerative/pathology
- Colonic Neoplasms/etiology
- Colonic Neoplasms/genetics
- Colonic Neoplasms/pathology
- Cytoskeletal Proteins/metabolism
- Dextran Sulfate
- Disease Models, Animal
- Genes, p53
- Genes, ras
- Genetic Predisposition to Disease
- Mice
- Mice, Inbred C57BL
- Mice, Inbred CBA
- Mice, Knockout
- Mutation
- Trans-Activators/metabolism
- beta Catenin
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Affiliation(s)
- S Fujii
- Department of Gastroenterology and Hepatology, Kyoto University Graduate School of Medicine, Kyoto, Japan
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Takeda J, Kitajima K, Fujii S, Horiuchi H, Hori H, Chibana Y, Okuyama T, Tominaga K, Ichikawa K, Ono Y, Teramoto T, Ohkura Y, Imura J, Shinoda M, Chiba T, Sakamoto C, Kawamata H, Fujimori T. Inhibitory effects of etodolac, a selective COX-2 inhibitor, on the occurrence of tumors in colitis-induced tumorigenesis model in rats. Oncol Rep 2004. [DOI: 10.3892/or.11.5.981] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
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37
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Takeda J, Kitajima K, Fujii S, Horiuchi H, Hori H, Chibana Y, Okuyama T, Tominaga K, Ichikawa K, Ono Y, Teramoto T, Ohkura Y, Imura J, Shinoda M, Chiba T, Sakamoto C, Kawamata H, Fujimori T. Inhibitory effects of etodolac, a selective COX-2 inhibitor, on the occurrence of tumors in colitis-induced tumorigenesis model in rats. Oncol Rep 2004; 11:981-5. [PMID: 15069535] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/29/2023] Open
Abstract
Ulcerative colitis (UC)-associated neoplasia is one of the complications seen in patients with long-standing UC. Based on many epidemiological studies, colitis is assumed to promote colon tumorigenesis. Tumorigenesis is known to be suppressed in rodents and humans by selective cyclooxygenase-2 inhibitors. However, whether these drugs would serve as protective agents against UC-associated neoplasia remains unclear. Therefore, using a colitis-induced tumorigenesis rat model, we investigated the effects of etodolac, a selective cyclooxygenase-2 inhibitor, on tumorigenesis. The following 4 groups were examined: group A, administered trinitrobenzene sulfonic acid and 1,2-dimethylhydrazine; group B, in addition to the treatment in group A, also received etodolac; group C, administered etodolac alone; and group D, did not receive any agent throughout the study and served as an untreated control. The rats were sacrificed 163 days after the start of experiment, and the number of aberrant crypt foci and tumors in the intestine were counted using a stereoscopic microscope following methylene blue staining. The mean number of aberrant crypt foci was 52.4 in group A, 18.9 in group B, 0 in group C and 0.5 in group D. A total of 9 tumors were observed in group A alone, with none in the remaining groups. The numbers of aberrant crypt foci and tumors in group B were significantly lower than in group A. Etodolac, a selective cyclooxygenase-2 inhibitor, suppresses the occurrence of aberrant crypt foci and tumors in colitis-induced tumorigenesis in rats.
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Affiliation(s)
- Jun Takeda
- Department of Surgical and Molecular Pathology, Dokkyo University School of Medicine, Mibu, Shimotsuga, Tochigi 321-0293, Japan
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Shiwaku K, Anuurad E, Enkhmaa B, Nogi A, Kitajima K, Shimono K, Yamane Y, Oyunsuren T. Overweight Japanese with body mass indexes of 23.0-24.9 have higher risks for obesity-associated disorders: a comparison of Japanese and Mongolians. Int J Obes (Lond) 2004; 28:152-8. [PMID: 14557832 DOI: 10.1038/sj.ijo.0802486] [Citation(s) in RCA: 100] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
OBJECTIVE The degree of obesity of Asians is less than that of Caucasians. It has been suggested that Japanese, categorized as having normal weight (BMI<25.0), as defined by WHO (2000), have a tendency toward increased incidences of dyslipidemia and diabetes. Our objective was to analyze parameters constituting obesity-associated disorders in overweight Japanese and Mongolians with a body mass index (BMI) of 23.0-24.9, and to assess the suitability for Asians of the Regional Office for Western Pacific Region of WHO criteria pertaining to obesity (WPRO criteria, 2000). DESIGN Cross-sectional study in a workplace setting. SUBJECTS A total of 386 Japanese men and 363 Japanese women, and 102 Mongolian men and 155 Mongolian women. MEASUREMENTS Anthropometric measurements (weight, height, waist circumference, hip circumference and blood pressure) and metabolic measurements (plasma levels of total cholesterol, HDL cholesterol, triglyceride, glucose and insulin). RESULTS Graded increases in BMI of Japanese and Mongolians were positively associated with body fat percent, waist circumference, hip circumference and waist/hip ratio. The Japanese were categorized as 22% overweight, 22% obese I, 3% obese II; the Mongolians rated as 18% overweight, 34% obese I, 19% obese II, based on the WPRO BMI criteria. The Mongolians had a higher prevalence of obesity and a higher body fat percent, but a lesser gradation of dyslipidemia, than did the BMI-matched Japanese groups. Overweight Japanese (BMI 23.0-24.9), in comparison to normal Japanese (BMI 18.5-22.9), had significant differences in systolic blood pressure, HDL-cholesterol and triglyceride in men, and in systolic and diastolic blood pressure, HDL-cholesterol, triglyceride, insulin and Homoeostasis model assessment-insulin resistance in women. In contrast, the Mongolians showed no significant differences in metabolic parameters between overweight and normal subjects, except for diastolic blood pressure. CONCLUSION Since the relationship between abdominal fat mass and BMI is ethnic-specific, a universal BMI cutoff point is inappropriate for Asian populations such as the Japanese and Mongolians. The present investigation suggests that, while the WPRO criteria are suitable for Japanese, the WHO criteria are more appropriate for Mongolians.
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Affiliation(s)
- K Shiwaku
- Department of Environmental and Preventive Medicine, Shimane Medical University, Izumo, Japan.
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Yoo T, Tanaka H, Kwon S, Mora F, Mora M, Yazawa Y, Suzuki M, Kitajima K. β-Tubulin as an autoantigen for autoimmune inner ear disease. ACTA ACUST UNITED AC 2003. [DOI: 10.1016/s0531-5131(03)00814-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Shiwaku K, Nogi A, Anuurad E, Kitajima K, Enkhmaa B, Shimono K, Yamane Y. Difficulty in losing weight by behavioral intervention for women with Trp64Arg polymorphism of the beta3-adrenergic receptor gene. Int J Obes (Lond) 2003; 27:1028-36. [PMID: 12917707 DOI: 10.1038/sj.ijo.0802375] [Citation(s) in RCA: 79] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
OBJECTIVE Trp64Arg mutation in the beta(3)-adrenergic receptor (beta(3)AR) gene is relatively common in Japanese people. However, it has not been clear whether persons with Trp64Arg mutation in the beta(3)AR gene tend to have obesity and difficulty in losing weight even with a restricted diet and exercise. We investigated the response of body weight and metabolic factors to behavioral intervention in Japanese women with Trp64Arg mutation in the beta(3)AR gene. DESIGN A 3-month behavioral intervention study using a combination of diet and exercise programs. SUBJECTS A total of 76 perimenopausal women with no clinical symptoms (age: 54.7+/-7.7 y, body mass index (BMI): 21.0-33.0 kg/m(2)). MEASUREMENTS Anthropometric measurements (weight, height, body fat, waist circumference, hip circumference, skin fold, resting energy expenditure and blood pressure) and metabolic measurements (serum levels of cholesterol, triglyceride, phospholipid, nonesterified fatty acid, glucose, insulin and leptin) and determination of the beta(3)AR genotype by polymerase chain reaction followed by BstNI digestion. RESULTS At the baseline of BMI, body weight, body fat, waist circumference, hip circumference, the arm skin fold, resting energy expenditure, or blood lipid and glucose profiles, there was no significant difference in participants with/without mutation of the beta(3)AR gene. The intervention yielded a body weight reduction in 69 and 48%, and induced a significant difference in weight loss (-0.74 and -0.01 kg) for women with wild-type and Trp64Arg mutation, respectively. Significant differences of anthropometric parameters were found in body weight, BMI, waist and hip circumferences and blood pressure of wild type by the intervention. However, women with Trp64Arg mutation did not show significant changes in these anthropometric parameters, except for hip circumference. A significant difference was found in high-density lipoprotein cholesterol (HDL-C) and in the low-density lipoprotein cholesterol/HDL-C ratio in both genotypes. CONCLUSION The results of the present study suggest that the Trp64Arg mutation of the beta(3)AR gene is associated with difficulty in losing weight through behavioral intervention, although it is not related to obesity-related phenotypes and resting energy expenditure before the intervention.
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Affiliation(s)
- K Shiwaku
- Department of Environmental Medicine, Shimane Medical, University, Izumo City, Shimane, Japan.
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41
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Kitajima K, Hogan KP. Increases of chlorophyll a/b ratios during acclimation of tropical woody seedlings to nitrogen limitation and high light. Plant Cell Environ 2003; 26:857-865. [PMID: 12803613 DOI: 10.1046/j.1365-3040.2003.01017.x] [Citation(s) in RCA: 120] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
According to the theory of optimal nitrogen partitioning within a leaf, the chlorophyll (Chl) a/b ratio is expected to increase when leaf N content decreases. Here, we report the first empirical support for this prediction. The Chl a/b ratio increased while Chl content decreased in response to N limitation in photosynthetic cotyledons and leaves of seedlings of four tropical woody species in the Bignoniaceae. The responses of all four species were in the same direction, but differed in magnitude. For Tabebuia rosea, the species that exhibited the greatest increase in Chl a/b ratios (up to values of 5.9), detailed photosynthetic characteristics were also examined. Light and N availability were positively correlated with the light- and CO2-saturated photosynthetic O2 evolution rate, as well as with leaf carboxylation capacity (Vcmax) and electron transport rate (Vj). Severe N limitation and high light did not cause chronic photo-inhibition (i.e. no change in quantum yield or in dark-acclimated Fv/Fm). The observed change in the ratio of Vcmax to leaf N in response to N availability was consistent with likely functional reasons for change in the Chl a/b ratio. Adjustment of the Chl a/b ratio was apparently an integral feature of acclimation to high light conditions and low N availability.
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Affiliation(s)
- K. Kitajima
- Department of Botany, University of Florida, Gainesville, FL 32611, USA and The Evergreen State College, Olympia, WA 98505, USA
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Kaihara T, Kusaka T, Nishi M, Kawamata H, Imura J, Kitajima K, Itoh-Minami R, Aoyama N, Kasuga M, Oda Y, Hattori M, Fujimori T. Dedifferentiation and decreased expression of adhesion molecules, E-cadherin and ZO-1, in colorectal cancer are closely related to liver metastasis. J Exp Clin Cancer Res 2003; 22:117-23. [PMID: 12725331] [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] [Indexed: 04/20/2023]
Abstract
Carcinoma cells with high metastatic potential often show a dedifferentiated phenotype at the primary site. In this study, a total of 48 cases (24 primary tumors of colorectal cancer (Pr-CRC) with liver metastasis, 24 without) were examined for E-cadherin and ZO-1 expression by immunohistochemical staining, and for their dedifferentiated phenotype. The expression levels of E-cadherin and ZO-1 were markedly decreased in the cancer cells of tumors with liver metastasis. Moreover, dedifferentiation of cancer cells, which was evaluated by the modified Gleason score, was also related to liver metastasis. However, none of the conventional clinicopathologic parameters of invasion, except lymph node metastasis, showed any relationship with liver metastasis. These results indicate that dedifferentiation and a decreased expression of E-cadherin and ZO-1 are closely related to liver metastasis.
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Affiliation(s)
- T Kaihara
- Dept. of Surgical and Molecular Pathology, Dokkyo University School of Medicine, Tochigi, Japan
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Kaihara T, Kawamata H, Imura J, Fujii S, Kitajima K, Omotehara F, Maeda N, Nakamura T, Fujimori T. Redifferentiation and ZO-1 reexpression in liver-metastasized colorectal cancer: possible association with epidermal growth factor receptor-induced tyrosine phosphorylation of ZO-1. Cancer Sci 2003; 94:166-72. [PMID: 12708492 DOI: 10.1111/j.1349-7006.2003.tb01414.x] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Tubular gland structures of colorectal cancer (CRC) have been demonstrated to undergo dedifferentiation at the primary site, and then the gland structures are re-formed in the liver metastases. In this study, we examined the degree of differentiation of the gland structure of 48 cases of CRCs (24 cases with synchronous liver metastasis, 24 cases without metastasis) by the modified Gleason grading system. We also investigated the role of ZO-1, one of the tight junction proteins, in the morphological changes, i.e., dedifferentiation and redifferentiation, of CRCs at the primary site and liver metastases. Liver-metastasized CRCs (2.47+/-0.37) showed a lower score in the modified Gleason grading system than the corresponding primary tumors (3.28+/-0.36) did, i.e., the tumor cells had undergone redifferentiation at liver metastases. ZO-1 was expressed at the apical cell borders of normal colorectal epithelium, the luminal side of which has tubular gland structures. In comparison with this normal epithelium, the ZO-1 expression level was frequently reduced in primary CRC with liver metastasis (20.8%) and ZO-1 was reexpressed in liver metastasized cancers (79.2%). Furthermore, it was demonstrated by an immunoprecipitation-western blotting analysis on 5 cases of CRC with liver metastasis that ZO-1 bound to epidermal growth factor receptor (EGFR) irrespective of the phosphorylation status of EGFR, and that EGFR associated ZO-1 was highly tyrosine-phosphorylated only in the primary CRC, but was dephosphorylated in the liver-metastasized cancers. Our observations suggest that tyrosine phosphorylation of ZO-1 leads to down-regulation of the function of ZO-1 and dedifferentiation of the glands in CRCs, and these phenomena contribute to liver metastases, and redifferentiation of the glands occurs in the liver metastases.
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Affiliation(s)
- Tsukasa Kaihara
- Department of Surgical and Molecular Pathology, Dokkyo University School of Medicine, 880 Kita-kobayashi, Mibu, Shimotsuga, Tochigi 321-0293
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Shiwaku K, Nogi A, Anuurad E, Kitajima K, Enkhmaa B, Shimono K, Yamane Y. 2P-0406 Difficulty in losing weight and improving metabolic parameters by behavioral intervention for women with Trp64 Arg polymorphism of the β3-adrenergic receptor gene. ATHEROSCLEROSIS SUPP 2003. [DOI: 10.1016/s1567-5688(03)90548-4] [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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Nogi A, Shiwaku K, Kitajima K, Shimono K, Anuurad E, Enkhmaa B, Yamane Y. 2P-0408 Development and evaluation of interventional program for metabolic syndrome based on health education and self-determination. ATHEROSCLEROSIS SUPP 2003. [DOI: 10.1016/s1567-5688(03)90550-2] [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: 11/15/2022]
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Kitajima K. Do shade-tolerant tropical tree seedlings depend longer on seed reserves? Functional growth analysis of three Bignoniaceae species. Funct Ecol 2002. [DOI: 10.1046/j.1365-2435.2002.00641.x] [Citation(s) in RCA: 81] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Yonemitsu H, Hino S, Kitajima K, Kagawa K, Ueyama H, Kumamoto T, Tsuda T. [Chronic hepatitis C with HTLV-I associated myelopathy (HAM) treated with interferon]. Nihon Naika Gakkai Zasshi 2002; 91:477-9. [PMID: 11925965 DOI: 10.2169/naika.91.477] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Harumi Yonemitsu
- Third Department of Internal Medicine, Oita Medical University, Oita
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Kitano H, Fujimura M, Kinoshita T, Kataoka H, Hirano M, Kitajima K. Endoscopic thyroid resection using cutaneous elevation in lieu of insufflation. Surg Endosc 2002; 16:88-91. [PMID: 11961612 DOI: 10.1007/s004640080197] [Citation(s) in RCA: 74] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2001] [Accepted: 06/18/2001] [Indexed: 11/25/2022]
Abstract
BACKGROUND Laparoscopic surgery to resect cervical masses has gained increasing acceptance during the past decade. This report describes the authors' technique and experience using total video endoscopic surgery to resect thyroid masses. METHODS The video camera is introduced through a 12-mm trocar inserted via a 10-mm infraclavicular incision in the sternal line. This incision will be hidden by the patient's undergarments postoperatively. An incision for a 12-mm trocar is made in each axilla, with additional incisions in the anterior chest made as necessary for the endoscope and instruments. Excellent exposure is produced by elevating the skin with hooks rather than by using carbon dioxide insufflation. This method reduces the incidence of subcutaneous emphysema and pneumomediastinum. RESULTS Twenty-two thyroid lesions were resected using total video endoscopic surgery (adenoma, 13; cancer, 5; benign cyst, 3; and Graves' disease, 1). Procedures included thyroidectomy (12), thyroidectomy and isthmusectomy (4), and subtotal thyroidectomy (2). Subtotal cervical adenectomy was performed in 3 patients with papillary carcinoma. Cosmetic results were excellent. CONCLUSION Endoscopic surgery of the neck is safe, minimally invasive, and produces excellent cosmetic results. However, it is in an early stage of development. Techniques have yet to be standardized, and specialized instruments are not available. The field is likely to mature as surgeons gain more experience.
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Affiliation(s)
- H Kitano
- Department of Otolaryngology, Head and Neck Surgery, Shiga University of Medical Science, Seta, Otsu, Shiga 520-2192, Japan.
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