Malignant liver tumors.

The primary hepatic malignancies are a diverse group of neoplasms with distinctive clinical and pathologic features. Imaging of the primary hepatic malignancies continues to be challenging. Ultrasonography, CT scanning, and MR imaging play complementary roles in the evaluation of these patients. Many [figure: see text] of these neoplasms have distinctive imaging features that may permit diagnosis. In most instances, however, biopsy is required for definitive diagnosis and treatment planning.