Background

Laparoscopic sleeve gastrectomy is (LSG) is currently the most common metabolic/bariatric surgery performed in the United States, and results in durable weight loss in the majority of patients, as well as pathology examination of many partially resected stomachs. Case reports and case series exist of gastrointestinal stromal tumors (GISTs) being found incidentally in sleeve specimens by pathology. GIST is a rare gastrointestinal tumor which originates from the interstitial cells of Cajal, and is most commonly found in the stomach, followed by small bowel, then colon and rectum. In this paper, we report a case of incidental discovery of a GIST in a resected gastric sleeve specimen, show intraoperative photos and photomicrographs of the tumor, and discuss staging and postoperative management of incidentally discovered GISTs after sleeve gastrectomy.