Contrast-enhanced computed tomography (CECT) revealed a heterogeneous solid expansive mass with irregular enhancement located in the upper left quadrant of the abdomen, adjacent to the gastric greater curvature. There were no cleavage planes between the tumor and the stomach, leading to extrinsic compression of the gastric chamber, displacing it in a cephalic direction. This tumor also exerted pressure on the splenic angle of the colon, although there are cleavage planes between these structures. The dimensions of the mass were approximately 10 cm anteroposteriorly x 9.5 cm transversely x 8.0 cm longitudinally.
Additionally, the imaging demonstrated features consistent with calculous cholecystopathy and involvement of uterine leiomyomatosis.
Impression: The primary diagnostic consideration is a solid expansive gastric lesion with exophytic growth, which is most suspicious for a gastric gastrointestinal stromal tumor (GIST).