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Zhai Z, Hu W, Huang Z, Chen Z, Lu S, Gong W. Gastric adenocarcinoma of the fundic gland type: A review of the literature. JGH Open 2023; 7:812-825. [PMID: 38162862 PMCID: PMC10757499 DOI: 10.1002/jgh3.13014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2023] [Revised: 10/26/2023] [Accepted: 11/12/2023] [Indexed: 01/03/2024]
Abstract
Background and Aim Gastric adenocarcinoma of the fundic gland type (GA-FG) is a newly described tumor entity but lacking consensus. This review summarizes the key features and controversies regarding this uncommon neoplasm. Methods We reviewed studies on GA-FG published in English from 2007 to 2021. Results We found that 327 cases (340 lesions) have been reported. GA-FG lesions originate from deep layers of the gastric mucosa, with the following characteristics on conventional white-light endoscopy examination. These lesions, macroscopically identified as submucosal tumor-like 0-IIa, tend to have a whitish discoloration without inflammation, atrophy, or intestinal metaplasia in the background mucosa. Tumors located in the upper third of the stomach are usually solitary, with an average size <10 mm. Contrastingly, magnifying endoscopy with narrow-band imaging mostly shows the absence of any demarcation line, with a regular microvascular pattern and regular microsurface pattern. GA-FGs are covered with normal foveolar epithelium, forming a so-called endless glands pattern in the deeper region, which are mainly composed of chief cells or parietal cells. Most tumors exhibit submucosal invasion, but lymphovascular invasion and nodal metastasis are rare. Regarding the treatment of GA-FG, endoscopic submucosal dissection (ESD) and endoscopic mucosal resection (EMR) are effective treatment methods. Conclusions GA-FG is a rare tumor that typically follows a benign course. This neoplasm has distinct endoscopic and pathological features and could be treated by ESD or EMR.
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Affiliation(s)
- Zhiyong Zhai
- Department of Gastroenterology, Shenzhen HospitalSouthern Medical UniversityShenzhenChina
- The Third School of Clinical MedicineSouthern Medical UniversityGuangzhouChina
| | - Wei Hu
- Department of Gastroenterology, Shenzhen HospitalSouthern Medical UniversityShenzhenChina
| | - Zhaoyu Huang
- Department of Gastroenterology, Shenzhen HospitalSouthern Medical UniversityShenzhenChina
- The Third School of Clinical MedicineSouthern Medical UniversityGuangzhouChina
| | - Zemin Chen
- Department of Gastroenterology, Shenzhen HospitalSouthern Medical UniversityShenzhenChina
- The Third School of Clinical MedicineSouthern Medical UniversityGuangzhouChina
| | - Sicun Lu
- Department of Gastroenterology, Shenzhen HospitalSouthern Medical UniversityShenzhenChina
- The Third School of Clinical MedicineSouthern Medical UniversityGuangzhouChina
| | - Wei Gong
- Department of Gastroenterology, Shenzhen HospitalSouthern Medical UniversityShenzhenChina
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Kobori I, Katayama Y, Hayakawa F, Fujiwara T, Kuwada M, Gyotoku Y, Kusano Y, Ban S, Tamano M. Endoscopic Treatment for Submucosal Heterotopic Gastric Gland in a Case Observed over Nine Years from Development to Enlargement. Intern Med 2023; 62:2833-2837. [PMID: 36792191 PMCID: PMC10602836 DOI: 10.2169/internalmedicine.1152-22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/19/2022] [Accepted: 12/15/2022] [Indexed: 02/16/2023] Open
Abstract
A 70-year-old Japanese man with a submucosal gastric mass that continued to increase in size underwent endoscopic submucosal dissection using the pocket creation method. Histologically, some epithelial cell nuclei were enlarged, but there was little atypia overall and no sign of malignancy, suggesting a diagnosis of submucosal heterotopic gastric gland (SHGG). SHGG that enlarges over time has been associated with gastric cancer, but a preoperative diagnosis is difficult. This case was very valuable, as it enabled us to follow the course of SHGG over a period of about nine years, from the onset to enlargement.
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Affiliation(s)
- Ikuhiro Kobori
- Department of Gastroenterology, Dokkyo Medical University Saitama Medical Center, Japan
| | - Yasumi Katayama
- Endoscopy Center, Dokkyo Medical University Saitama Medical Center, Japan
| | - Fuki Hayakawa
- Department of Gastroenterology, Dokkyo Medical University Saitama Medical Center, Japan
| | - Takeshi Fujiwara
- Department of Gastroenterology, Dokkyo Medical University Saitama Medical Center, Japan
| | - Masaru Kuwada
- Department of Gastroenterology, Dokkyo Medical University Saitama Medical Center, Japan
| | - Yoshinori Gyotoku
- Department of Gastroenterology, Dokkyo Medical University Saitama Medical Center, Japan
| | - Yumi Kusano
- Department of Gastroenterology, Dokkyo Medical University Saitama Medical Center, Japan
| | - Shinichi Ban
- Department of Pathology, Dokkyo Medical University Saitama Medical Center, Japan
| | - Masaya Tamano
- Department of Gastroenterology, Dokkyo Medical University Saitama Medical Center, Japan
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Abstract
BACKGROUND Gastric adenocarcinoma of the fundic gland type is a new subtype of gastric adenocarcinoma. In 2019, the World Health Organization (WHO) listed gastric adenocarcinoma of the fundic gland type (GA-FG) as a new and rare gastric tumour with a low incidence due to the small number of cumulative cases worldwide. Twenty cases of GA-FG found in our centre were retrospectively analysed to improve the diagnostic ability of endoscopy and pathology in this disease. OBJECTIVE To investigate the clinicopathological features of fundus-derived gastric tumours and to improve the understanding of and diagnostic accuracy of endoscopy for this disease. METHODS The clinicopathological characteristics of 20 GA-FG cases between 2018 and 2022 were analysed using clinical and follow-up data and endoscopic, immunohistochemical, and pathological morphology characteristics. RESULTS In all cases, GA-FG was found in the fundus and the body of the stomach. In total, there were 19 patients with 20 lesions, with most of the patients having a single lesion. One patient had multiple lesions, and another patient had complications from signet ring cell carcinoma (SRCC). All lesions occurred in non-atrophic areas, and 10 patients had gastric fundic gland polyps simultaneously. There were 14 cases of gastric fundus adenocarcinoma and 6 cases of acid-secreting adenoma. Fourteen lesions were treated with endoscopic submucosal dissection (ESD), without recurrence or metastasis during the follow up; 6 patients were followed up for observation, 2 of whom showed no lesions after the first biopsy by gastric endoscopy, and 4 of whom showed no significant changes. CONCLUSIONS The incidence rate for GA-FG lesions may be underestimated due to their benign course. ESD seems to be an adequate treatment for GA-FG. MAIN POINTS Gastric adenocarcinoma of the fundic gland type (GA-FG) is located in the fundus and body of the stomach. All lesions occur in non-atrophic areas, and almost one-half involve gastric fundus polyps simultaneously. GA-FG lesions typically follow a benign disease course. ESD seems to be an adequate treatment for GA-FG.
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Affiliation(s)
- Mei Yang
- Department of Gastroenterology, The Third People's Hospital of Chengdu, Affiliated Hospital of Southwest Jiaotong University, Chengdu, China
| | - Xiaobin Sun
- Department of Gastroenterology, The Third People's Hospital of Chengdu, Affiliated Hospital of Southwest Jiaotong University, Chengdu, China
| | - Yuanyuan Chen
- Department of Gastroenterology, The Third People's Hospital of Chengdu, Affiliated Hospital of Southwest Jiaotong University, Chengdu, China
| | - Peng Yang
- Department of Gastroenterology, The Third People's Hospital of Chengdu, Affiliated Hospital of Southwest Jiaotong University, Chengdu, China
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A case of early gastric cancer resembling a subepithelial lesion diagnosed by endoscopic ultrasound-guided fine needle aspiration. Clin J Gastroenterol 2022; 15:1048-1054. [DOI: 10.1007/s12328-022-01706-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/24/2022] [Accepted: 09/20/2022] [Indexed: 11/05/2022]
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Cho JH, Lee SH. Early gastric cancer presenting as a typical submucosal tumor cured by endoscopic submucosal dissection: A case report. World J Gastroenterol 2022; 28:2994-3000. [PMID: 35978882 PMCID: PMC9280726 DOI: 10.3748/wjg.v28.i25.2994] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/18/2021] [Revised: 03/12/2022] [Accepted: 05/28/2022] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Submucosal tumor (SMT)-like gastric cancer is rare, and almost all cases undergo curative surgical treatment because the submucosal layer is usually deeply invaded by tumor cells or because histopathologic types of SMT-like gastric cancer are undifferentiated or poorly differentiated. No report has been issued on an SMT-like gastric cancer cured by endoscopic resection alone or on changes in the endoscopic features of this type of tumor over several years.
CASE SUMMARY We describe an exceptional case of a 53-year-old male with a 1.5 cm-sized SMT-like lesion covered by normal-appearing mucosa discovered by esophagogastroduodenoscopy (EGD) at the gastric antrum. Endoscopic ultrasound (EUS) visualized a homogeneous, well-circumscribed hypoechogenic lesion arising from the second sonographic layer with associated subtle obliteration of the third sonographic layer. Initial endoscopic biopsy was negative for neoplasm. The patient refused to undergo an invasive procedure and was subsequently lost to follow-up. Three years after initial detection, EGD revealed the lesion had become markedly erythematous, and at 4 years after initial EGD it had increased in size to 1.8 cm and developed a central ulcer and a heterogeneous EUS echo. Finally, endoscopic submucosal dissection (ESD) was performed, and histopathologic examination revealed a moderately differentiated adenocarcinoma had minutely invaded the submucosal layer (invasion depth 169 μm) but without lymphovascular invasion and with negative resection margins. Fortunately, no additional surgical treatment was required. He has been followed for 4 years after ESD without any evidence of local or distant recurrence.
CONCLUSION This report describes an extremely rare case of early gastric cancer presenting as SMT that was cured by ESD after a treatment delay of 4 years and the endoscopic changes that occurred during this period. The report highlights the importance of considering the possibility of gastric cancer when SMT is encountered in clinical practice.
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Affiliation(s)
- Joon Hyun Cho
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Yeungnam University College of Medicine, Daegu 42415, South Korea
| | - Si Hyung Lee
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Yeungnam University College of Medicine, Daegu 42415, South Korea
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Meng XY, Yang G, Dong CJ, Zheng RY. Gastric adenocarcinoma of the fundic gland: A review of clinicopathological characteristics, treatment and prognosis. Rare Tumors 2021; 13:20363613211060171. [PMID: 34925726 PMCID: PMC8679019 DOI: 10.1177/20363613211060171] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2021] [Accepted: 10/28/2021] [Indexed: 12/18/2022] Open
Abstract
Gastric adenocarcinoma of the fundic gland is a rare, well-differentiated gastric cancer entity, and very few patients transition to poorly differentiated tubular adenocarcinoma during progression. Gastric adenocarcinoma of the fundic gland originates from the mucosa of the gastric fundic gland, usually without chronic gastritis or intestinal metaplasia. Histologically, the tumor cells are closely arranged to form anastomosing tubular glands, and more than 95% of tumor cells differentiate towards chief cells. Most gastric adenocarcinoma of the fundic gland cases are characterized by submucosal involvement, but the tumor volume is usually small, with lymphatic and vascular invasion rarely observed. Therefore, endoscopic submucosal dissection can be an ideal treatment, leading to a favorable prognosis, and recurrence and metastasis of the disease are uncommon.
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Affiliation(s)
- Xiang-yu Meng
- Department of Biochemistry and Molecular Biology, Mudanjiang Medical University, Mudanjiang, China
| | - Guang Yang
- Department of Pathology, Dentistry and Pharmaceutical Sciences, Okayama University Graduate School of Medicine, Okayama, Japan
- Department of Pathology, Mudanjiang Medical University, Mudanjiang, China
| | - Cheng-ji Dong
- Department of Hepatobiliary and Pancreas Surgery, The First Hospital of Jilin University, Changchun, China
| | - Ru-yi Zheng
- Medical Imaging Center, The Mine Hospital of Xu Zhou, Xuzhou, China
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Jung K, Park MI. Subepithelial Tumor-like Gastric Cancer. THE KOREAN JOURNAL OF HELICOBACTER AND UPPER GASTROINTESTINAL RESEARCH 2021. [DOI: 10.7704/kjhugr.2021.0006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Gastric adenocarcinoma appearance in leiomyoma: A case report. Int J Surg Case Rep 2020; 71:327-330. [PMID: 32492645 PMCID: PMC7265051 DOI: 10.1016/j.ijscr.2020.05.050] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2020] [Revised: 05/19/2020] [Accepted: 05/20/2020] [Indexed: 11/22/2022] Open
Abstract
Gastric adenocarcinoma arising from a leiomyoma which is diagnosed by pathological evidence as heterotopic glands carcinoma within it. Pathological evidences diagnosed heterotopic gastric glands within the leiomyoma, then adenocarcinoma arose from the heterotopic gastric glands. This is the first report that describes a case of gastric adenocarcinoma arising from leiomyoma.
Introduction We experienced an extremely rare case of gastric adenocarcinoma wrapped by leiomyoma. Presentation of case A 65-year-old man had an abnormality (filling defect) of the upper gastrointestinal series in his first medical checkup five years prior. Esophagogastroduodenoscopy detected a 10 mm submucosal tumor-like lesion in the greater curvature of the upper gastric remnant body. Despite repeated biopsy from the lesion, there was no sign of malignancy. A delle was observed on the top of the tumor at another visit five year after the first and a biopsy specimen revealed poorly differentiated adenocarcinoma. Therefore, laparoscopic gastrectomy was performed. Histological assessment revealed a 28 × 22 mm elevated lesion with a slight depression. Microscopically, papillary adenocarcinoma was observed at the submucosa with a solitary heterotopic gastric gland adjacent to the lesion. The final diagnosis was papillary adenocarcinoma arising from a solitary heterotopic gastric gland in the leiomyoma. No recurrence has occurred during a follow-up of two and a half years after surgery. Conclusions This is the first report of gastric adenocarcinoma arising from a submucosal tumor.
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Uozumi T, Seki H, Matsuzono E, Sogabe S, Sugai N, Fujita J, Suzuki J, Akimoto M, Yanai M, Suzuki A. Gastric adenocarcinoma of fundic gland type arising from heterotopic gastric glands during a 19-year follow-up period. Clin J Gastroenterol 2019; 12:556-561. [PMID: 31165461 PMCID: PMC6892357 DOI: 10.1007/s12328-019-00989-5] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/25/2018] [Accepted: 04/23/2019] [Indexed: 11/25/2022]
Abstract
A 73-year-old man with prior history of duodenal ulcer has been undergoing periodic upper gastrointestinal endoscopy since 1999. In 2017, a 25-mm submucosal tumor-like protrusion was detected in the lesser curvature of the upper stomach; histological examination of the lesion revealed gastric adenocarcinoma of fundic gland type. En bloc resection was achieved using endoscopic submucosal dissection. The patient was histopathologically diagnosed with gastric adenocarcinoma of fundic gland type arising from heterotopic gastric glands. Immunohistochemical staining was positive for MUC5AC, MUC6, pepsinogen I, and proton pump but negative for MUC2 and CD10. Moreover, the patient's Ki-67 labeling index score was extremely low. The presence of MUC5AC indicated that the tumor differentiated to the foveolar epithelium and fundic glands. Gastric adenocarcinoma of fundic gland type that differentiates to several directions has a higher malignant potential than the disease that differentiates to chief cells. A retrospective review of the patient's previous endoscopic examination revealed that the submucosal tumor-like protrusion existed since 2000; tumor size increased from 8 mm in 2000 to 25 mm in 2017. The present case is rare in that the carcinoma arose from heterotopic gastric glands. Moreover, the 19-year follow-up revealed that the tumor differentiated to the foveolar epithelium, considered as having high-grade malignancy.
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Affiliation(s)
- Takeshi Uozumi
- Departments of Gastroenterology, KKR Sapporo Medical Center, 6-3-40, Hiragishi 1jou, Toyohira-ku, Sapporo, Hokkaido, 062-0931, Japan.
| | - Hideyuki Seki
- Departments of Gastroenterology, KKR Sapporo Medical Center, 6-3-40, Hiragishi 1jou, Toyohira-ku, Sapporo, Hokkaido, 062-0931, Japan
| | - Emi Matsuzono
- Departments of Gastroenterology, KKR Sapporo Medical Center, 6-3-40, Hiragishi 1jou, Toyohira-ku, Sapporo, Hokkaido, 062-0931, Japan
| | - Susumu Sogabe
- Departments of Gastroenterology, KKR Sapporo Medical Center, 6-3-40, Hiragishi 1jou, Toyohira-ku, Sapporo, Hokkaido, 062-0931, Japan
| | - Nozomu Sugai
- Departments of Gastroenterology, KKR Sapporo Medical Center, 6-3-40, Hiragishi 1jou, Toyohira-ku, Sapporo, Hokkaido, 062-0931, Japan
| | - Jun Fujita
- Departments of Gastroenterology, KKR Sapporo Medical Center, 6-3-40, Hiragishi 1jou, Toyohira-ku, Sapporo, Hokkaido, 062-0931, Japan
| | - Junichi Suzuki
- Departments of Gastroenterology, KKR Sapporo Medical Center, 6-3-40, Hiragishi 1jou, Toyohira-ku, Sapporo, Hokkaido, 062-0931, Japan
| | - Mayuko Akimoto
- Department of Pathology, KKR Sapporo Medical Center, Sapporo, Japan
| | - Mitsuru Yanai
- Department of Pathology, KKR Sapporo Medical Center, Sapporo, Japan
| | - Akira Suzuki
- Department of Pathology, KKR Sapporo Medical Center, Sapporo, Japan
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Cheng XL, Liu H. Gastric adenocarcinoma mimicking a submucosal tumor: A case report. World J Clin Cases 2019; 7:3138-3144. [PMID: 31624766 PMCID: PMC6795713 DOI: 10.12998/wjcc.v7.i19.3138] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/17/2019] [Revised: 08/17/2019] [Accepted: 08/26/2019] [Indexed: 02/05/2023] Open
Abstract
BACKGROUND Submucosal tumor (SMT)-like early-stage gastric cancer (GC) has rarely been reported. It is difficult to consider the possibility of GC and differentiate it from other submucosal lesions.
CASE SUMMARY We present the case of a 50-year-old male patient with a 1.6 cm SMT-like flat elevated lesion covered by congested mucosa on the gastric angle. Magnifying endoscopy with narrow-band imaging, endoscopic biopsy, endoscopic ultrasound, and computed tomography were performed for diagnosis. Endoscopic submucosal dissection and gastrectomy with lymph node dissection were performed. The post-resection pathological analysis led to a final diagnosis of GC (Bormann type I, T1bN2M0).
CONCLUSION GC should be considered when detecting an SMT-like lesion in the stomach.
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Affiliation(s)
- Xiao-Li Cheng
- Department of Gastroenterology, Qingdao Sanatorium of Shandong Province, Qingdao 266071, Shandong Province, China
| | - Hua Liu
- Department of Gastroenterology, the Affiliated Hospital of Qingdao University, Qingdao 266003, Shandong Province, China
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Early gastric cancer with multiple submucosal heterotopic gastric gland: A case report. Mol Clin Oncol 2019; 10:583-586. [PMID: 31086667 PMCID: PMC6488944 DOI: 10.3892/mco.2019.1846] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2018] [Accepted: 04/17/2019] [Indexed: 12/21/2022] Open
Abstract
A case of early gastric cancer involving multiple submucosal gastric glands that was treated by distal gastrectomy was described in the present case report. An 85-year-old man was referred to our hospital for the treatment of gastric cancer. Esophagogastroduodenoscopy revealed an irregular, nodular, elevated lesion on the posterior wall of the middle third of the stomach, and biopsy specimens indicated well-differentiated tubular adenocarcinoma. Submucosal tumor (SMT)-like lesions were detected in the area adjacent to the nodular lesion, in the anterior wall side of the middle third of the stomach. Abdominal contrast-enhanced computed tomography showed cystic lesions in the middle part of the stomach, and no mass lesions in the liver. The patient underwent distal gastrectomy with regional lymphadenectomy. Macroscopic examination of the resected specimen showed an SMT-like lesion measuring 2.8×2.6 cm in contact with a superficial, depressed lesion measuring 1.7×0.9 mm in the middle third of the stomach, and another SMT-like lesion measuring 1.5×1.4 cm in diameter, which was also in the middle third of the stomach. The pathological diagnosis was well-differentiated tubular adenocarcinoma invading the gastric submucosal layer without lymph node metastasis, but with nearby submucosal heterotopic gastric gland (SHGG) detected. Following surgery, the patient remained symptom-free without evidence of recurrence for 3 months. The finding of SHGG remains a rare entity, and further studies are warranted to clarify the association between these submucosal lesions and the development of cancer.
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Uchida A, Ozawa M, Ueda Y, Murai Y, Nishimura Y, Ishimatsu H, Okouchi Y, Ishiguro K, Hamada Y, Sasamoto R, Watanabe M, Sano N, Miyamoto R, Inagawa S, Kikuchi K. Gastric adenocarcinoma of fundic gland mucosa type localized in the submucosa: A case report. Medicine (Baltimore) 2018; 97:e12341. [PMID: 30212986 PMCID: PMC6156021 DOI: 10.1097/md.0000000000012341] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/29/2023] Open
Abstract
RATIONALE Gastric adenocarcinoma of fundic gland type (GA-FG) is a new histological type of gastric cancer manifesting with differentiation into a fundic gland. Furthermore, gastric adenocarcinoma of fundic gland mucosa type (GA-FGM) is a tumor that shows differentiation into not only a fundic gland but also foveolar epithelium and a mucous gland. These tumors tend to invade the submucosal layer. However, no cases of these tumors being localized only in the submucosa have been reported. Here, we present a case of GA-FGM localized in the submucosa and describe the cytological features of this tumor. To our knowledge, this is the first reported case of GA-FGM localized in the submucosa. PATIENT CONCERNS A man in his early 70s was referred to our institution because of the detection of a gastric submucosal tumor during a health checkup. DIAGNOSES Gastric adenocarcinoma of fundic gland mucosa type. INTERVENTIONS Endoscopic ultrasound-guided fine-needle aspiration (FNA), endoscopic submucosal dissection (ESD), and total gastrectomy with lymph node dissection were performed. OUTCOMES The FNA specimen showed epithelial cells with low-grade atypia. In the ESD specimen, adenocarcinoma showing a gastric fundic gland mucosa-like morphology was observed. Immunohistochemical analysis showed positive staining for pepsinogen I, H+/K+-adenosine triphosphatase, MUC6, and MUC5AC and negative staining for MUC2 and CD10, indicating tumor differentiation into fundic gland mucosa. Therefore, the tumor was diagnosed as GA-FGM, with localization in the submucosal layer. Total gastrectomy and lymph node dissection were performed because of the positive margins of the ESD specimen. Neither residual tumor nor lymph node metastasis was detected; however, many foci of heterotopic gastric glands (HGGs) were observed in the gastric wall, suggesting that GA-FGM arose from an HGG. After treatment, no recurrence was observed during a 1-year follow-up period. LESSONS Various tumors may arise from HGGs. Furthermore, when an FNA specimen shows gastric fundic gland mucosa-like epithelial cells with weak atypia, the possibility of GA-FG and GA-FGM should be considered.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | | | - Naoki Sano
- Department of Gastroenterological Surgery, Tsukuba Medical Center Hospital, Tsukuba, Ibaraki, Japan
| | - Ryoichi Miyamoto
- Department of Gastroenterological Surgery, Tsukuba Medical Center Hospital, Tsukuba, Ibaraki, Japan
| | - Satoshi Inagawa
- Department of Gastroenterological Surgery, Tsukuba Medical Center Hospital, Tsukuba, Ibaraki, Japan
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13
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Kai K, Satake M, Tokunaga O. Gastric adenocarcinoma of fundic gland type with signet-ring cell carcinoma component: A case report and review of the literature. World J Gastroenterol 2018; 24:2915-2920. [PMID: 30018486 PMCID: PMC6048433 DOI: 10.3748/wjg.v24.i26.2915] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/13/2018] [Revised: 05/22/2018] [Accepted: 06/09/2018] [Indexed: 02/06/2023] Open
Abstract
A depressed lesion was found at a gastric angle of 76-year-old Japanese woman by esophagogastroduodenoscopy. Four years prior, she was diagnosed with a Helicobacter pylori infection but no eradication was performed. The pathological diagnosis of biopsy specimens was signet-ring cell carcinoma. Endoscopic submucosal dissection (ESD) was performed. Histopathological examination of the ESD specimen revealed proliferation of well-differentiated tubular adenocarcinoma mimicking fundic gland cells at the deep layer of the lamina propria mucosae. These tumor cells expressed focally pepsinogen-I, diffusely MUC6, and scattered H+/K+ ATPase according to immunohistochemistry. Therefore, we diagnosed this tumor as gastric adenocarcinoma of fundic gland type (GA-FG). Adjacent to the GA-FG, proliferation of signet-ring cell carcinoma which diffusely expressed MUC 2 and MUC 5AC was observed. Intestinal metaplasia was focally observed in the surrounding mucosa of the signet-ring cell carcinoma. To the best of our knowledge, this is the first case report of GA-FG with a signet-ring cell carcinoma component. The origin of signet-ring cell carcinoma, i.e., whether it accidentally arose from a non-neoplastic mucosa and coexisted with the GA-FG or dedifferentiated from the GA-FG is unclear at present. We expect the accumulation of similar cases and further analysis to clarify this issue.
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Affiliation(s)
- Keita Kai
- Department of Pathology, Saga University Hospital, Saga 849-8501, Japan
| | - Masaaki Satake
- Department of Gastroenterology, Koga Hospital 21, Kurume 839-0801, Japan
| | - Osamu Tokunaga
- Department of Pathology, Shin Koga Hospital, Kurume 830-8577, Japan
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