S1 Data -

Objective
This study aimed to compare the surgical outcomes in patients with endometrial cancer who underwent either single-port laparoscopic hysterectomy (SPLH) or multi-port laparoscopic hysterectomy (MPLH).
Methods
We conducted a systematic literature search from the earliest records available up to May 2023. The databases searched included PubMed, Embase, ClinicalTrials.gov, and the Cochrane Library.
Results
A total of 12 studies were included in the analysis. Both the SPLH and MPLH groups had similar operative times (MD = -4.27, 95% CI [-35.75, 27.22], p = 0.98), conversion rates (odds ratio [OR] = 1.43, 95% CI [0.57, 3.59], p = 0.44), blood transfusion rates, intraoperative complications (bladder injury, bowel injury, and vascular injury), and postoperative complications (umbilical hernia, fever, fistula, lymphocyst, and wound-related issues). However, the SPLH group showed significant advantages in certain areas. There was a notable reduction in estimated intraoperative blood loss (EBL) compared to the MPLH group (mean difference [MD] = -23.80, 95% CI [-42.99, -4.62], p = 0.02) and a shorter hospital stay duration (MD = -0.33, 95% CI [-0.46, -0.20], p < 0.00001). Although there was some debate about postoperative pain, SPLH tended to have more favorable outcomes. Despite these advantages, the SPLH group was less efficient in para-aortic lymph node clearance compared to the MPLH group (MD = -0.96, 95% CI [-1.57, -0.35], p = 0.002). No significant differences were observed in overall lymph node dissection (MD = -0.91, 95% CI [-2.52, 0.70], p = 0.27) and pelvic lymph node dissection (MD = -1.22, 95% CI [-3.82, 1.27], p = 0.36) between the two groups. Additionally, both groups showed similar therapeutic results, with no significant differences in overall survival (OS) and progression-free survival (PFS).
Conclusion
SPLH and MPLH techniques are equally effective in treating endometrial cancer, with both showing low rates of surgical complications with similar rates of surgical complications and therapeutic outcomes. However, SPLH offers additional benefits, including smaller incisions, reduced estimated intraoperative blood loss, and shorter hospital stays, making it an increasingly popular option for treating endometrial cancer.