上腔静脉梗阻综合征(SVCS)是上腔静脉回流受阴引起的一个临床并发症。1975年williamHuntrr最初报道的病例是继发于梅毒性主动脉瘤。此后不同病因相继提出,而主动脉瘤,胸部恶性肿瘤和慢性纵隔炎为常见原医,成人中肿瘤性疾病占2/3以上。上腔静脉位于胸骨与脊柱之间的狭窄区域内,是一个簿壁低压系统,周围有许多解剖器官,由淋巴结和主动脉包绕,同时横跨右主支气管。当静脉受压或内有阻塞时,血 SVCS is a clinical complication caused by vena cava backflow. The initial case reported by William Huntrr in 1975 was secondary to syphilitic aortic aneurysms. Since then, different causes have been proposed, while the aortic aneurysm, thoracic malignant tumors and chronic mediastinals are common primary medicines, and adult tumor diseases account for more than 2/3. The superior vena cava is located in a narrow area between the sternum and the spine. It is a wall-operated, low-pressure system surrounded by many anatomical organs surrounded by lymph nodes and the aorta, and spanning the right main bronchus. When the blood pressure or internal obstruction, blood