A Case of Adenocarcinoma Arising from a Hyperplastic Polyp in the Stomach

Jee, Sam Ryong; Choi, Seok Reyol; Ryu, Seung Hoon; Park, Eun Hee; Jang, Jin Seok; Lee, Jong Hun; Han, Sang Young; Shin, Woo Won

Abstract

The hyperplastic gastric polyps comprise approximately 75% of all gastric epithelial polyps. However, coincidental gastric carcinoma has been rarely reported, being found in 1.5%-2.1% of patients with hyperplastic polyps. The size and the pathology of polyps seem to be important in the application of endoscopic removal. We present a 58-year-old female with well differentiated adenocarcinoma arising from a 1.0cm-sized hyperplastic polyp in the stomach. On the gastroscopic examination, five polyps were noted and their sizes ranged from 0.3cm to 1.0cm. She underwent the endoscopic polypectomy with snare or strip biopsy. Microscopically, focal cancerous change was observed in the largest one (1 cm size, Yamada's type IV) on the greater curvature of the lower body.