CT
Axial with oral contrast
Axial C+ portal venous phase
Axial C+ delayed
A 75 × 45 × 50 mm well-defined polypoid mass with a small calcification focus and heterogeneous enhancement is noted in the proximal of the lesser curvature. Most of the mass is bulged into the gastric lumen; however, a small part about 30 mm in diameter is extraluminal, without frank surrounding fat stranding, regional lymphadenopathy, or signs of local invasion.
The left kidney is relatively small and shows uneven parenchymal thinning, which suggests scar. A 10 mm stone in the lower pole of the left kidney, accompanied by mild to moderate hydronephrosis.