Ma Shao-hua, Zhang Tong-lin, Song Shi-bing, Xiu Dian-rong, Wang Chang-ming, Jiang Bin, Wang Jin-rui, Liu Jian-yu
Department of Surgery, Third hospital, Peking University, Beijing 100083, China.
Zhonghua Yi Xue Za Zhi. 2007 Apr 10;87(14):967-70.
To evaluate the clinical values of color Doppler ultrasound (BUS?) and magnetic resonance angiography (MRA) in diagnosis of the tumor emboli and thrombi in portal venous system.
Examination of the portal venous system by BUS and MRA was conducted on 165 patients with undergoing liver transplantation because of cirrhosis or primary hepatic carcinoma before the operation. The extrahepatic portal vein was observed during operation and pathological examination was conducted after the operation. The results of BUS and MRA were compared as regards the sensitivity and specificity in discovering the tumor emboli and thrombi in portal venous system.
The overall sensitivity, specificity, and positive predictive rate of BUS for the portal vein embolus were 86.5%, 97.4%, and 85.3% respectively. The overall sensitivity, specificity, and positive predictive rate of MRA for the portal vein embolus were 90.5%, 99.3%, and 95.7% respectively. However the accuracy in diagnosing the nature of the portal venous embolus was less than 70% for these 2 methods.
Non-invasive, both BUS and MRA help discover the portal vein embolus. However, false positivity and false negativity still exist. And both fail to diagnose the nature of the portal venous embolus.
