Metastatic disease is by far the most common form of malignant neoplastic involvement of the liver. Each of the cell types that occur within the liver (i.e., hepatocytes, bile duct epithelium, neuroendocrine cells, endothelial cells, lymphoid cells, and so forth), however, may give rise to malignant hepatic neoplasms. Approximately 93.1% of primary malignant hepatic neoplasms are epithelial in origin, with hepatocellular carcinoma (HCC) (82.3%) and cholangiocarcinoma (9.7%) accounting for nearly all of these tumors. Mesenchymal tumors, such as angiosarcoma and epithelioid hemangioendothelioma (both of endothelial origin), primary lymphoma, and other sarcomas are rare, accounting for the remaining 1.1% of primary hepatic neoplasms.<sup>8 Craig J.R., Peters R.L., Edmonson H.A.   Tumors of the liver and intrahepatic bile ducts. Atlas of Tumor Pathology, series 2 Washington: Armed Forces Institute of Pathology (1989). 

Cliccare qui per andare alla sezione Riferimenti</sup> This article reviews primary malignant hepatic neoplasms and their cross-sectional imaging characteristics.