Changes

===Imaging===

===Diagnostic Imaging===

*Radiographic signs non specific.  Hepatomegaly due to enlargement of biliary ducts and in some cases ascites is also seen.

*Radiographic signs non specific.  Hepatomegaly due to enlargement of biliary ducts and in some cases ascites is also seen.

*Ultrasonography is more helpful.  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.

*Ultrasonography is more helpful.  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.

===Histopathology===

===Histopathology===