Analysis of patients with gastrointestinal neuroendocrine tumor

PURPOSE: We investigated the background factors, histopathological results, and prognosis of patients with gastrointestinal neuroendocrine tumors. MATERIALS AND METHODS: The medical records of 42 patients with gastrointestinal neuroendocrine tumors who were diagnosed and treated at our hospital from 2002 to 2012 were collected and retrospectively reviewed. RESULT: The ratio of male to female patients was 29:13; the mean age was 66.1 years. The tumors were located in the esophagus( 2 patients), stomach( 13 patients), duodenum( 9 patients), colon( 1 patient), and rectum( 18 patients). Regarding the depth of the tumor, invasion of the submucosa( SM) was observed in 26 patients; invasion of the muscularis propria( MP), in 1 patient; invasion of the subserosa( SS), in 3 patients; penetration of the serosa( SE)( AD), in 1 patient, invasion of the adjacent structures( SI)( AI), in 3 patients; and the extent of tumor invasion was unknown in 1 patient. Patients who experienced relapse had a poor prognosis, and all the patients died.