胸膜间皮肿瘤少见,它的发病率约占全部癌瘤的0.02～0.04％。现将我院收治的2例报道如下: 例1,男性,51岁,卷烟厂工人。于1982年8月16日因左下胸腔积液25天住院。体检发现,左第六、第七肋间多个黄豆大小硬性包块伴左下胸腔积液。A型超声波检查发现左下胸腔有实性包块。抽出血性胸 Pleural mesothelial tumors are rare, and its incidence accounts for 0.02-0.04% of all cancers. Two cases reported in our hospital are reported as follows: Case 1, male, 51 years old, cigarette factory workers. On August 16, 1982, the hospital was hospitalized for 25 days due to left lower pleural effusion. Physical examination revealed that the left sixth and seventh intercostal spaces had multiple hard bean masses with left lower pleural effusion. A type ultrasound examination revealed a solid mass in the left lower thoracic cavity. Bloody chest