胸膜腔大量积液的原因很多 ,可致严重后果。胸膜腔内体液超过 2 5 ml称为胸膜腔积液 (FPS)。美国每年诊断 FPS者超过 10 0万。 FPS可因心肺疾病所致 ,也可为恶性肿瘤或炎症的体征 ,需要立即评估及治疗。病因　胸膜腔积液继发于局部或全身病变 ,可以破坏胸膜腔内液体的产生 (来 Many pleural effusion for many reasons, can cause serious consequences. More than 25 ml of pleural fluid is called pleural effusion (FPS). The United States diagnoses more than 10 million FPS patients each year. FPS can be due to heart and lung disease, but also for malignant tumors or signs of inflammation, the need for immediate assessment and treatment. Etiology Pleural effusion secondary to local or systemic disease can destroy the fluid in the pleural cavity