Diagnostic value of brush cytology in the diagnosis of bile duct carcinoma: A study in 65 patients with bile duct strictures
Mordechai Rabinovitz, Albert B. Zajko, Tarek Hassanein, Balu Shetty, Klaus M. Bron, Robert R. Schade, Judith S. Gavaler, Geoffrey Block, David H. van Thiel, Andrew Dekker – 1 October 1990 – Malignant strictures of the extrahepatic bile ducts are difficult to distinguish from benign strictures, particularly in patients with primary sclerosing cholangitis.