cystic liver disease (Experimental Factor Ontology identifier EFO_1001505) can be described as follows. Cystic disease of the liver is rare and can take several forms. Cysts in the main trunk of the biliary tree are called choledochal cysts. Cysts that occur in the small branches of bile ducts within the liver are referred to as Caroli’s syndrome. The other cysts in the liver that do not occur in the biliary tree are referred to as polycystic liver disease. Also known as: cystic disease of the liver.