What does the CT show? Is this malignant or benign pathology?
Soft tissue mass at the neck with local invasion, encasement of the CHA and involving the CHD. The soft tissue thickening involves the whole thickness of the GB wall, including the mucosa. Although benign and malignant disease of the GB can be difficult to disambiguate, and may co-exist, the focal, transmural thickening and local invasion is characteristic of GB carcinoma.
Axial CT demonstrates soft tissue thickening of the GB neck. This encases the common hepatic artery. This is causing biliary obstruction at the level of the CHD and there is resultant intrahepatic biliary tree dilatation. The GB fundus is dilated. There are a few gallstones.