Acute acalculous cholecystitis simulating Mirizzi syndrome: a very rare condition.

[carcinoma of the gallbladder]

Mirizzi syndrome , a rare complication of chronic cholelithiasis , is caused by an impacted stone in the cystic duct or the neck of the gallbladder . Patients present with abdominal pain , fever , and obstructive jaundice . The cholangiographic finding is a smooth stricture caused by lateral compression of the common hepatic duct . A similar appearance on cholangiogram can result from carcinoma of the gallbladder , carcinoma of the cystic duct , or hilar adenopathy . Acute acalculous cholecystitis simulating Mirizzi syndrome is extremely rare . This is the report of such a case in which marked inflammatory changes around the neck of the gallbladder likely caused significant mechanical obstruction of the common hepatic duct .