DDx Biliary Obstruction

· Intrahepatic:

· Extrahepatic:

· Intraductal

· Stones

· Neoplasms

· Cholangiocarcinoma

· Ampullary adenocarcinoma

· Gallbladder adenocarcinoma

· Biliary strictures

· gallstones

· Post-surgical (95%)

· External injury to the abdomen

· Pancreatitis

· infectious

· Parasites

· Ascaris migrating from intestine

· tuberculosis

· AIDS-related cholangiopathy

· PSC

· Extraductal:

· Neoplasms

· Metastatic (GI or breast usually) adenopathy in porta hepatis

· Pancreatic adenocarcinoma

· Pancreatitis

· Cystic duct stones with gallbladder distension

References:

· E-medicine.medscape.com (2009)