Objective  To explore the safety and feasibility of single-incision plus one-port laparoscopic surgery (SILS+1) for colorectal cancer.

  Methods  The clinical data of 8 patients with colorectal cancer who were admitted to hospital for transumbilical SILS+1 between October 2017 and November 2019 were retrospectively analyzed.

  Results  The procedure was successfully performed in all 8 cases, without needing to convert to open surgery or increase the number of punch holes. The mean operating time was 107 minutes (range:95 to 124 minutes). Blood loss ranged from 10 to 80 mL (median:33 mL). Two patients had a fever postoperatively. Postoperative heat absorption was considered, and the fever reduced after the third day. The other patients had no obvious surgical complications. Gastrointestinal function was restored 1 to 3 days after the operation, and the abdominal drainage tube was removed after 3 to 5 days. The average hospital stay was 9.3 days (range:7 to 11 days). Postoperative pathology confirmed colorectal adenocarcinoma in all patients. The average number of lymph nodes detected was 13.6 (range:11-16). No perioperative complications or deaths occurred. Patients were followed up for 3-24 months (average:10 months), and no local recurrence or distant metastases were found.

  Conclusion  Although SILS+1 for colorectal cancer appears to be safe and feasible, with minimal trauma and satisfactory cosmetic effect, the long-term effects require further observation.