title: Pedunculated gastric neuroendocrine tumor: a case report.
abstract: Background and study aims:Gastric neuroendocrine tumors (NETs) are rare lesions that develop from neuroendocrine cells. NETs are classified into 3 types based on the rate of mitosis and Ki-67 labeling index; the NET G1 type is synonymously referred to as carcinoid. Gastric NETs are usually discovered as submucosal tumors during upper gastrointestinal endoscopic examination. This study reports a rare case of pedunculated gastric NET. The lesion was found as a result of gastroendoscopy. The gastric lesion was a pedunculated polyp with a reddish head. We performed endoscopic submucosal dissection and an en-bloc resection of the gastric lesion. The resected specimen was evaluated histopathologically and diagnosed as a carcinoid (NET G1).
authors.affiliation: Digestive Disease Center, Showa University Northern Yokohama Hospital; Department of Gastroenterological Medicine, Kakunodate Municipal Hospital.
authors.forename: Kenichi
authors.initials: K
authors.lastname: Takeda
authors.affiliation: Digestive Disease Center, Showa University Northern Yokohama Hospital.
authors.forename: Shin-Ei
authors.initials: SE
authors.lastname: Kudo
authors.affiliation: Digestive Disease Center, Showa University Northern Yokohama Hospital.
authors.forename: Fumio
authors.initials: F
authors.lastname: Ishida