Ancillary tests in the diagnosis of liver and pancreatic neoplasms.

Ancillary tests in the diagnosis of liver and pancreatic neoplasms include a wide array of immunostains and molecular diagnostic tests, and the selection of tests is based on the differential diagnosis. This review discusses ancillary tests in the diagnosis of liver tumors, including benign and malignant primary tumors as well as metastatic tumors to the liver. In addition, ancillary tests for the diagnosis of both solid and cystic pancreatic neoplasms, including molecular tests in these lesions are also reviewed.