恶性肿瘤胸膜转移引起的胸腔积液是临床常见的并发症[1,2 ] ,我们自 1997年以来 ,将介入动脉鞘改制成留置式胸腔闭式引流器 ,治疗癌性胸腔积液 2 0例 ,取得较好效果。1　材料和方法全组男性 12例 ,女性 8例。年龄 4 3～ 73岁 ,平均6 2岁。其中肺癌胸膜转移 16例 ,乳腺癌伴肺及 Pleural effusion caused by malignant pleural metastasis is a common clinical complication [1,2]. Since 1997, we have changed the interventional arterial sheath into an indwelling closed thoracic drainage device to treat 20 cases of cancerous pleural effusion. Achieve better results. 1 Materials and Methods There were 12 males and 8 females in the whole group. Age 4 3 to 73 years old, average 6 2 years old. 16 cases of lung cancer pleural metastasis, breast cancer with lung and