The appearances are typical of a gastric adenocarcinoma involving the distal stomach resulting in gastric outlet obstruction.

Typical modes of presentation are iron deficiency anemia (as in this case), weight loss or vomiting.

The stomach wall is much better appreciated with a distended stomach lumen (ideally water as a negative contrast agent) when assessing it with CT.

ENDOSCOPIC BIOPSY:  Diffuse infiltrating gastric adenocarcinoma