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. 2021 Jul 15;13(7):662–672. doi: 10.4251/wjgo.v13.i7.662

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©The Author(s) 2021. Published by Baishideng Publishing Group Inc. All rights reserved.

This article is an open-access article that was selected by an in-house editor and fully peer-reviewed by external reviewers. It is distributed in accordance with the Creative Commons Attribution NonCommercial (CC BY-NC 4.0) license, which permits others to distribute, remix, adapt, build upon this work non-commercially, and license their derivative works on different terms, provided the original work is properly cited and the use is non-commercial. See: http://creativecommons.org/Licenses/by-nc/4.0/

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A case of sporadic fundic gland polyp with carcinoma. A: White light endoscopic view. A 73-year-old woman with a complaint of upper abdominal discomfort underwent esophagogastroduodenoscopy. She had received long-term proton pump inhibitor (PPI) therapy for gastroesophageal reflux disease. White light endoscopy identified several fundic gland polyp-like lesions in the body and fundus of the stomach without atrophic mucosa, suggesting a Helicobacter pylori (H. pylori)-uninfected setting. Among them, a 6 mm isochromatic sessile polyp with a slightly irregular surface structure was detected in the fundus; B: Magnifying narrow-band imaging (NBI) endoscopic view. Magnifying NBI endoscopy revealed irregular microvessels on the lesion surface; C: Chromoendoscopic view. Chromoendoscopy using indigo carmine dye more clearly revealed the irregularity of the lesion surface. This lesion was endoscopically diagnosed as a fundic gland polyp with dysplasia or carcinoma and was removed by the endoscopic mucosal resection technique; D: Histopathological view (low magnification). The histopathological examination revealed a fundic gland polyp with prominent dilated cystic glands often observed in patients receiving PPI therapy; E-G: Histopathological view (higher magnification of D). This lesion coexisted with epithelial dysplasia and intramucosal well-differentiated adenocarcinoma. Serological examination confirmed that she was negative for H. pylori infection. Colonoscopy as well as her family history showed no familial adenomatous polyposis.