Massive Extraluminal Gastrointestinal Stromal Tumour with Pelvic Extension: Rare Case Report

Large extraluminal gastrointestinal stromal tumours (GISTs) are rare, with varied presentations and patient profiles. This report discusses a 22-year-old female presenting with a 4-month history of lower abdominal pain, weight loss, and recurrent urinary tract infections. Imaging revealed a large intra-abdominal mass (9.3 x 15.3 x 18.9 cm) originating from the stomach, extending into the pelvis, and compressing adjacent structures. In surgery, the mass was found to arise from the lesser curvature of the stomach and adhered to the transverse colon, with non-adherent extension into the pelvis and compression of adjacent organs. A gastric wedge resection and transverse colectomy were performed to achieve R0 resection. Histopathological analysis confirmed a GIST. Challenges included identifying the tumour origin and determining optimal surgical management, highlighting the complexity of such cases.

Publication History

Article published online:
27 March 2025