恶性胸腔积液(MPE)是恶性肿瘤侵犯胸膜而出现的恶性肿瘤晚期表现,产生的主要机制是:肿瘤侵袭胸膜,引起胸膜的炎性反应,血管内皮细胞受损,血管通透性增加,血液中大分子物质渗出,或淋巴管梗阻造成淋巴液流体静压增加,淋巴液回流障碍。胸腔积液能否得到控制直接影响到患者的整体疗 Malignant pleural effusion (MPE) is a malignant tumor that invading the pleura and appears as a late manifestation of malignancy. The main mechanisms are: invasion of the pleura by the tumor, inflammatory response of the pleura, impaired vascular endothelial cells, increased vascular permeability, In macromolecular exudation, or lymphatic obstruction caused by increased fluid hydrostatic pressure, lymph reflux disorder. Pleural effusion can be controlled directly affect the patient’s overall treatment