近年来 ,我们在乳癌根治手术中 ,采取保留部分胸小肌段 ,对防止和减轻患侧上肢水肿和皮下积液 ,起到了一定的效果。临床资料 :本组 2 4例均为女性 ,年龄 35～ 6 8岁 ,平均42 .5岁。肿瘤发生在右侧 8例 ,左侧 16例 ;外上象限 19例 ,内上象限 5例。腋淋巴结肿大 5例。病理报告为 In recent years, we have retained some of the pectoralis minor muscle segments during radical mastectomy to prevent and reduce ipsilateral upper extremity edema and subcutaneous fluid accumulation. Clinical data: This group of 24 patients were all females, aged 35 to 68 years, with an average of 42.5 years old. Tumors occurred in 8 cases on the right, 16 cases on the left, 19 cases in the upper quadrant, and 5 cases in the upper quadrant. Axillary lymph nodes were enlarged in 5 cases. Pathology report is