There is a well-circumscribed soft tissue mass (8x5 cm) of interspleno-gastric location inseparable from the posterior gastric wall, of intermediate signal intensity on T1WI, and T2WI with central areas of high signal (necrosis). Subtle peripheral enhancement is noted, following IV contrast. On DWI it appears of high signal with low ADC.
The gallbladder is normal in size, containing gallstones with the enhanced wall. The common bile duct is dilated (9 mm), containing few small stones in its distal portion.
A focal right diaphragmatic defect is noted with intrathoracic herniation of the hepatic dome and right colonic flexure, well-visualized on the coronal sequence.