Exophytic cystic gastrointestinal stromal tumor mimics hepatic abscess or tumor

A middle-aged patient presented with epigastric pain, elevated white blood cell count, and mild anemia. Computed tomography (CT) revealed an exophytic gastric mass that mimicked a hepatic abscess or tumor, with intraperitoneal hemorrhage. The mass had heterogeneous texture, interstitial bleeding, and cystic change that showed delayed mild enhancement on multiphase CT. This was consistent with gastrointestinal stromal tumor that was confirmed by pathological and immunohistochemical analysis.