血性胸水常继发于恶性肿瘤,是胸膜被癌肿侵犯的结果,预后不良。但某些良性疾患也可伴发血性胸水,有时会发生误诊而延误治疗。1986～1989年我们对21例血性胸腔积液患者进行了纤支镜检查。现将检查结果及纤支镜检查在血性胸水中的诊断价值介绍如下: Bloody pleural effusion often secondary to malignant tumors, is the result of pleural invasion by the cancer, the prognosis is poor. However, some benign conditions can also be associated with bloody pleural effusion, sometimes misdiagnosis and delay treatment. From 1986 to 1989, 21 patients with bloody pleural effusion were examined by fiberoptic bronchoscopy. Now the test results and bronchoscopy in bloody pleural effusion diagnostic value is described below: