May Be Caused by

 Common

AIDS-related cholangiopathy

Ascites

Cryptosporidium

Cytomegalovirus infection

Gangrenous cholecystitis

Heart failure

Hypoalbuminemia

Liver failure

Renal failure

 Uncommon

Adenomyomatosis

Blockage of lymphatic and venous drainage of gallbladder

Gallbladder wall varices

Hepatitis

Pancreatitis

Xanthogranulomatous cholecystitis