患者 ,藏族 ,已婚 ,有 2个子女 ,平素月经正常。无腹痛及月经不规则 ,无白带。于 1 999年 1 2月 2 0日来我院行双侧输卵管结扎绝育术 ,术前查体 :一般情况良好 ,全腹平软 ,未触及包块 ,下腹部无压痛及反跳痛。子宫及其附件径Ｂ超检查未见异常。于入院次日行手术 ,术中延长切口? Patients, Tibetans, married, 2 children, normal menstruation. No abdominal pain and irregular menstruation, no vaginal discharge. On February 20th, 1959, the hospital performed bilateral tubal ligation and sterilization on January 20th. The preoperative examination showed that the general condition was good, the whole abdomen was soft, and no mass was touched. There was no tenderness or rebound tenderness in the lower abdomen. Ultrasound examination of the uterus and its attachment showed no abnormalities. On the next day of admission, I performed an operation to extend the incision?