Imaging of the patient with a biliary tract or primary liver tumor.

Cross-sectional imaging can be useful in the diagnosis of biliary tract and primary liver tumors. Hepatobiliary tumors are diverse in growth patterns, histologic types and tumor location. A fundamental understanding of the imaging features of hepatobiliary tumors is critical for diagnosis, staging and treatment. Knowledge about various manifestations and mimickers of biliary and primary liver tumors is essential for tumor diagnosis and suitable management. Magnetic resonance imaging and computed tomography technology continues to rapidly evolve and these tools not only aid in evaluation and treatment, but also can potentially define response to therapy and overall patient prognosis.