Radiopaedia.org

A well defined large solitary unilocular cystic mass at the hepatic interlobar region, with enhancing thin smooth wall (fibrous capsule) and hairline internal septations. The content is homogenous and of low density (HU = 0-10).

No calcification. No soft tissue component or papillary projections. No definite signs of invasion.

Mass effect on the surrounding organs / structures is also obvious, with mild intrahepatic biliary dilatation.