Inverted Hyperplastic Polyp in Stomach: A Case Report and Literature Review

An inverted hyperplastic polyp (IHP) found in stomach is rare and characterized by downward growth of hyperplastic mucosal component into the submucosa. Because of such characteristic, IHP can be misdiagnosed as subepithelial tumor or malignant tumor. In fact, adenocarcinoma was reported to have coe...

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Bibliographic Details
Main Authors: Yeon Ho Lee, Moon Kyung Joo, Beom Jae Lee, Ji-Ae Lee, Taehyun Kim, Jin Gu Yoon, Jung Min Lee, Jong-Jae Park
Format: Article
Language:English
Published: Jin Publishing & Printing Co. 2016-02-01
Series:The Korean Journal of Gastroenterology
Subjects:
Online Access:http://www.kjg.or.kr/journal/view.html?doi=10.4166/kjg.2016.67.2.98
Description
Summary:An inverted hyperplastic polyp (IHP) found in stomach is rare and characterized by downward growth of hyperplastic mucosal component into the submucosa. Because of such characteristic, IHP can be misdiagnosed as subepithelial tumor or malignant tumor. In fact, adenocarcinoma was reported to have coexisted with gastric IHP in several previous reports. Because only 18 cases on gastric IHP have been reported in English and Korean literature until now, pathogenesis and clinical features of gastric IHP and correlation with adenocarcinoma have not been clearly established. Herein, we report a case of gastric IHP which was initially misdiagnosed as gastrointestinal stromal tumor and resected using endoscopic submucosal dissection. Literature review of previously published case reports on gastric IHP is also presented. (Korean J Gastroenterol 2016;67:98-102)
ISSN:1598-9992