Three-dimensional contrast-enhanced MR angiography in diagnosis of portal vein involvement by hepatic tumors

Figure 1 A patient with hepatocellular carcinoma in the right lobe. (A) Source image of 3-dimensional contrast-enhanced MR angiography demonstrates a hypointense tumor in the right lobe (arrow). (B) Multiplanar reconstruction of 3-dimensional contrast-enhanced MR angiography shows widened main and right portal vein with filling defects (arrow). (C) The patient underwent tumor resection and removal of tumor thrombi in the portal vein. Histopathology (HE × 40) reveals tumor throm-bus in the portal vein (arrow).