CT诊断上腔静脉(SVC)或其主要分支阻塞至少需要两个征象:一是阻塞部位以远的中心静脉无显影(或显影淡);二是侧枝静脉血管显影。 作者复习了47例CT扫描SVC或其主要分支有阻塞或受压迹象的病例,男34例,女8例。年龄14～75岁。肺癌是最常见的疾病(40例),其次是恶性淋巴瘤(4例),恶性间皮瘤(1例),纵隔血肿(1例)和原因不明的SVC血栓形成(1例)。全部病例从胸廓入口至横膈作增强连续CT扫描。侧枝血管呈强 CT diagnosis of superior vena cava (SVC) or its main branch obstruction requires at least two signs: First, the central part of the obstruction without further development of the central vein (or developing light); the second is the development of collateral vessels. The authors reviewed 47 cases of CT scan SVC or signs of obstruction or compression of their major branches, 34 males and 8 females. Age 14 to 75 years old. Lung cancer was the most common disease (40 cases), followed by malignant lymphoma (4 cases), malignant mesothelioma (1 case), mediastinal hematoma (1 case) and unexplained SVC thrombosis (1 case). All cases from the thoracic entrance to the diaphragm for enhanced CT scan. Collateral vessels were strong