Abstract: Objective To investigate the efficacy and safety of transumbilical single-port laparoscopic appendicectomy in acute complicated appendicitis. Methods Retrospective analysis was conducted for the data of 1104 patients with complicated appendicitis who underwent emergency laparoscopic appendectomy at the Department of General Surgery of Aerospace Center Hospital from April 2014 to August 2022;among them,788 patients underwent transumbilical single-port laparoscopic appendectomy (SILA) and 316 cases underwent traditional three-port laparoscopic appendectomy (LA)；the operation time,intraoperative blood loss,leukocyte value on the first day after surgery,postoperative exhaust time,hospital stay,postoperative pathology and postoperative complications were statistically analyzed. Results The surgical duration of the single hole laparoscopic appendectomy (SILA) group was (68.26±22.29) minutes,intraoperative blood loss was (15.93±13.10) ml,postoperative exhaust time was (2.29±0.52) days,and white blood cells were (11.12±1.67)×10⁹/L on the first day after surgery,and the surgical duration of the hree hole laparoscopic appendectomy (LA) groupwas (66.47±20.40) minutes,intraoperative blood loss was (16.65±12.98) ml,postoperative exhaust time was (2.23±0.58) days,and white blood cells were (11.35±1.54)×10⁹/L on the first day after surgery,there was no statistically significant difference in the data between each group（P>0.05）.After 1 month of follow-up,no incisional hernia and other complications occurred in the two groups,the cosmetic effect of abdominal incision in SILA group was satisfactory,the hospitalization time of SILA group was (4.60±1.18) days,which was shorter than that in the traditional LA group (4.93±1.71) days,and the difference was statistically significant（P<0.05）.Conclusion Based on proficiency in traditional LA operations,SILA is safe and viable;in addition to the hidden aesthetic function of scars,it does not prolong the operation time and increase the risk of postoperative complications.

Key words: transumbilical single-port laparoscopy, appendectomy, complex appendicitis