皮瓣下积液是乳癌根治术后最常见的近期并发症，进而可引起皮瓣坏死，影响切口Ⅰ期愈合及术后综合治疗。我院自１９９２～１９９８年共行乳癌根治术３４例，并于术中同时采用皮外补丁法预防皮瓣下积液，使皮瓣下积液的发生率由以往的５１％（本院资料）下降为９％，现就我们的 Subcutaneous flap effusion is the most common short-term complication after radical mastectomy. It can cause necrosis of the flap, affect the healing of the incision and postoperative comprehensive treatment. In our hospital, from March to 1998, 34 cases of breast cancer radical surgery were performed. In addition, the method of external skin patch was used to prevent subcutaneous effusion during the operation. The incidence of subcutaneous flap effusion was from the previous 51%. ) dropped to 9%, now on our