On the CT scan of the abdomen, before and after contrast administration, the appendix in the right iliac fossa is seen originating and lying behind the caecum, with its tip positioned high near the right liver (subhepatic in location). The base and body of the appendix are enlarged, measuring 17 mm in diameter; the structure of the tip is no longer clear. A fluid collection is noted under the right liver, measuring 44x54x86 mm, containing small gas bubbles, with surrounding fat infiltration and thickened peritoneum. The wall is thick and shows peripheral enhancement after contrast administration. The lesion extends into the parenchyma of the right liver segment VI and compresses the right kidney parenchyma.
There is diffuse thickening of the colonic wall at the hepatic flexure, submucosal oedema, and surrounding fat infiltration.
A small amount of free fluid is present in the pouch of Douglas.