Changes

===Imaging===

===Imaging===

Radiographic signs are non specific.  Hepatomegaly due to enlargement of biliary ducts and ascites in some cases.

Radiographic signs are non specific.  Hepatomegaly due to enlargement of biliary ducts and ascites in some cases.

Ultrasonograpy is more helpful and biliary tract dilation can be seen in all cases.  Common bile duct is normally dilated and the gallbladder may also be dilated with "sludge".  Main differential is extrahepatic biliary obstruction

Ultrasonograpy is more helpful and biliary tract dilation can be seen in all cases.  Common bile duct is normally dilated and the gallbladder may also be dilated with "sludge".  Main differential is extrahepatic biliary obstruction.

===Cytology and Culture===

===Cytology and Culture===