Gamuts

Cystic liver lesion

Choledochal cysts (a.k.a. bile duct cyst) are congenital conditions involving cystic dilatation of bile ducts. [Source: Wikipedia ]

May Be Caused by
 Common
Acute hematoma
Cystic liver metastasis
Epithelial cyst
Hydatid disease
Liver abscess
Post-traumatic cyst
 Uncommon
Biliary cystadenocarcinoma
Biliary cystadenoma
Biloma
Caroli disease
Cat-scratch disease
Cholangiocarcinoma
Choledochal cyst
Cystic duct remnant with mucocele
Cystic hepatocellular carcinoma
Cystic lymphangioma
Hepatic artery aneurysm
Intrahepatic gallbladder
Mesenchymal hamartoma
Multiple bile duct hamartoma
Polycystic liver disease
Portal vein aneurysm
Undifferentiated sarcoma
Von Hippel-Lindau disease