Pictorial review: various causes of hepatic capsular retraction: CT and MR findings.

Hepatic capsular retraction adjacent to hepatic tumour is rare, although this finding has been described in a variety of malignant tumours and haemangioma. The authors have seen various causes of hepatic capsular retraction associated with hepatic tumours, including a variety of malignant tumours, haemangioma and post-treatment of malignant tumours, as well as cases not associated with a hepatic tumour, including confluent hepatic fibrosis, oriental cholangiohepatitis and bile duct necrosis. Furthermore, causes of pseudoretraction of the hepatic capsule, including accessory fissure and normal liver parenchyma between the protruded masses, are described.