Benign liver tumours and cystic diseases of the liver

There are various types of cysts and tumours in the liver, all of which are abnormal growths or structures.

Benign liver tumours are common and usually without symptoms (asymptomatic).

A cyst is an abnormal, fluid-filled balloon or bubblelike structure (sac) that can grow in any part of your body. Liver cysts are mostly congenital, meaning that you have them from birth, or caused by contact with some form of parasite.

The information below focuses on the most common benign tumours, specifically haemangiomas, focal nodular hyperplasia and adenomas. There is also information about cystic diseases, which unlike benign tumours, can pose a serious health risk but are relatively rare in the UK.