To study the application effect of ultrasonic knife combined with microwave hemostatic separator in laparoscopic pediatric liver tumor resection, in order to develop a feasible and safe surgical method.

The Pediatric Surgery Department of the Second Hospital of Hebei Medical University was admitted to 15 children who underwent laparoscopic liver tumor resection from Jun. 2016 to Mar. 2021. The clinical characteristics, location and operation of the liver tumor were retrospectively analyzed. Pre-ultrasound and imaging examination, surgical treatment strategy, operation time, postoperative recurrence rate and complications etc.

The children were 6 months to 14 years old. There were 9 males and 6 females. All 15 cases were successfully completed laparoscopic liver tumor resection, including 10 cases of hepatoblastoma, 3 cases of hepatic hemangioma, and hepatic blood vessels. There was 1 case of sarcoma and 1 case of inflammatory pseudotumor. The operation process went smoothly. During the operation, a microwave hemostatic separator combined with an ultrasonic knife was used to remove the liver tumor. The average blood loss during the operation was (50.76±7.56)ml, and the average postoperative liver function recovery time was (4.23±1.23)days. Drink a small amount of water at the beginning of the day and gradually increase the amount to restore a light diet without incision infection. Hilar blocking bands were pre-installed in all children during the operation, but no hilar blocking was performed; no bleeding occurred after the operation; 2 cases of postoperative drainage fluid was bile-like, 50-100 ml per day, considering biliary fistula. After drainage, the bile drainage became less and healed by itself; 2 cases of postoperative B-ultrasound showed a small amount of fluid around the liver, which disappeared after 1 to 3 months of follow-up.

The microwave hemostatic separator combined with ultrasonic knife can be effectively used in laparoscopic pediatric liver mass resection, and this method reduces the amount of intraoperative blood loss, reduces postoperative liver damage, and shortens the postoperative recovery time of children. It is a safe and effective surgical method.