Primary hepatic malignant neoplasms

Although metastatic disease is by far the most common form of neoplastic involvement of the liver, a variety of primary hepatic malignant neoplasms may develop from any of the cell types within the liver. Primary hepatic neoplasms include hepatocellular carcinoma, intrahepatic cholangiocarcinoma, biliary cystadenocarcinoma, and a variety of mesenchymal tumors. This article reviews the clinical presentation and pathology of these tumors and discusses their sonographic, CT scan, and MR imaging appearance.