​Differential diagnosis of extrahepatic causes of cholestasis

​Differential diagnosis of extrahepatic causes of cholestasis: 
-sepsis 
-parasites such as Clonorchis,Ascaris, Fasciola hepatica
-hydatid disease
-choledochal cyst 
-gallbladder cancer extending to common duct 
-compression of common duct by metastatic cancer 
-carcinoma of the bile ducts
-primary sclerosing cholangitis 
-biliary stricture 
-pancreatic tumor 
-choledocholithiasis 
-cholangitis