Computed tomographic (CT) scan in a patient with acute cholecystitis complicated by perforation and liver abscess formation.
(A) The CT scan shows a gallstone (arrow) surrounded by an irregular accumulation of fluid with a hyperemic rim (arrowhead).
(B) The fluid can be seen extending from the gallbladder fossa into the liver parenchyma (arrowhead).
(C) Percutaneous aspiration of pus confirmed the presence of an abscess, and a drain was placed (arrow). Following drainage of the abscess, a small amount of contrast was injected into the decompressed cavity.