Simple liver cysts are benign fluid filled cavities in the liver. It occurs in about 5% of the population. Polycystic liver has more than 20 cyst in the liver. It is a rare, congenital disease which often develops in conjunction with polycystic kidney disease. Simple cyst should be distinguished from other cystic lesions such as parasitic or hydatid cyst, or cystic tumour, such as cystadenoma or its malignant counterpart, cystadenocarcinoma.
