Objective To analyze the main reasons and diseases placement which superior vena cava syndrome(SVCS) caused by malignant diseases and have a deeply understanding for SVCS.

• 目的通过分析恶性肿瘤引起上腔静脉综合征的主要致病原因和原发病变部位,旨在提高对恶性肿瘤引起上腔静脉综合征的认识。