Phenotypic diversity of intrahepatic and extrahepatic cholangiocarcinoma on aspiration cytology and core needle biopsy: case series and review of the literature.

Abstract excerpt

BACKGROUND: Cholangiocarcinoma (CC) represents approximately 10% of primary liver malignancies and can mimic metastatic adenocarcinoma. METHODS: The authors retrospectively reviewed the cytopathology files at the University of Texas Medical Branch to identify patients who were diagnosed with intrahepatic or extrahepatic CC by aspiration cytology between 1995 and 2004. Brush cytology specimens of extrahepatic CC...

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