Clinicopathological Features and Prognosis of Gastrointestinal Stromal Tumor Located in the Jejunum and Ileum.

Background: Data about the clinicopathological features and prognosis of gastrointestinal stromal tumors (GISTs) located in jejunum and ileum are lacking. The present study aims to investigate the features and prognosis of jejunal and ileal GISTs based on the Surveillance, Epidemiology, and End Results (SEER) database. Patients and Methods: Cases of jejunal and ileal GISTs were extracted from SEER database. Clinicopathological characteristics and survival data of patients were recorded. The clinicopathological features and prognosis of patients were analyzed. Results: There were 399 male (56.8%) and 303 female (43.2%). The median age was 60 years (17-96). Four hundred and seventy-two tumors were located in the jejunum (67.2%) and 230 tumors in the ileum (32.8%). The median tumor size was 7.0 cm (0.5-90). The 5-, 10-, and 20-year disease specific survival (DSS) was 84.4, 71.2, and 54.2% respectively. Clinicopathological features were comparable between tumors located in the jejunum and ileum (all p > 0.05) except gender and tumor size (both p < 0.05). Jejunal GISTs, rather than ileal GISTs (p = 0.043), were commonly found in the males. The tumor size of jejunal GISTs was smaller than that of ileal GISTs ( p = 0.010). The DSS of jejunal GISTs was comparable to that of ileal GISTs ( p = 0.269). Conclusions: Jejunal GISTs were more common than ileal GISTs. The prognosis was comparable between jejunal and ileal GISTs. (c) 2018 S. Karger AG, Basel