肾脏肿瘤、特别是肾细胞癌侵及肾静脉及下腔静脉形成肿瘤栓塞的病例并不少见。日本东京慈惠大学医学院1976年4月至1979年3月收治30例肾癌患者,其中有下腔静脉内肿瘤栓塞者8例(27%)。目前诊断肾静脉、下腔静脉内肿瘤栓塞的方法主要是肾动脉造影、下腔静脉造影和超声波检查。近年来日益广泛地用CT诊断肾癌,本文介绍4例依靠CT It is not uncommon for kidney tumors, particularly renal cell carcinomas, to invade the renal veins and inferior vena cava to form tumor emboli. Thirty patients with renal cell carcinoma were treated in Tiehui University School of Medicine, Tokyo, Japan from April 1976 to March 1979. Among them, 8 cases (27%) had tumor embolism in the inferior vena cava. Current methods for the diagnosis of tumor embolization in the renal vein and inferior vena cava are mainly renal arteriography, inferior vena cava angiography, and ultrasonography. In recent years, CT has been widely used to diagnose kidney cancer. This article describes 4 cases that rely on CT.