GIST with a twist: An extra-luminal pedunculated gastric GIST presenting with tumor torsion and hemoperitoneum

Gastrointestinal stromal tumors (GIST) are rare mesenchymal tumors. Most present with nonspecific symptoms. We present a case of a 17-year-old male with sudden abdominal pain. Imaging revealed a hypodense mass inferior to the stomach. Serial blood work showed a decreasing hemoglobin level. In the operating room a pedunculated, torted, hemorrhagic mass on the anterior surface of the stomach was resected. Pathology confirmed a GIST, c-kit …