title: CT demonstration of portal and superior mesenteric vein thrombosis in hepatocellular carcinoma.
abstract: Three cases of hepatocellular carcinoma in which computed tomography (CT) demonstrated thrombosis of the portal vein are reported. In one patient, extension of the thrombus into the superior mesenteric vein was identified as well. The outstanding CT features of portal vein thrombosis were: (a) enlargement of the vein, (b) intraluminal low density area, and (c) hyperdense peripheral ring due to the enhancement of the venous wall. These findings may be useful in differentiating hepatocellular carcinoma from hepatic metastases.
mesh_terms: D000368:Aged; D006528:Carcinoma, Hepatocellular / Q000150:complications*; D003287:Contrast Media / Q000008:administration & dosage; D005260:Female; D006801:Humans; D008113:Liver Neoplasms / Q000150:complications*; D008297:Male; D008641:Mesenteric Vascular Occlusion / Q000000981:diagnostic imaging* / Q000209:etiology; D008642:Mesenteric Veins / Q000000981:diagnostic imaging; D008875:Middle Aged; D011169:Portal Vein / Q000000981:diagnostic imaging*; D013927:Thrombosis / Q000000981:diagnostic imaging* / Q000209:etiology; D014057:Tomography, X-Ray Computed
chemical_list: D003287:Contrast Media