Objective: To evaluate the functional outcomes of nerve-sparing surgery for deep infiltrating endometriosis (DIE) with or without posterolateral parametrectomy. Methods:A multicenter, observational, retrospective, cohort study was performed including all symptomatic women who underwent nerve-sparing laparoscopic excision of DIE and preoperative and postoperative assessment of functional outcomes through validated questionnaires between April 2019 and March 2020. Women with posterolateral parametrial DIE (P-group) and women with no parametrial involvement (NP-group) were compared in terms of preoperative and postoperative functional outcomes related to pelvic organs assessed through validated questionnaires (KESS and GIQLI for bowel function, BFLUTS for urinary function, and FSFI for sexual function); pain symptoms at 3-month follow up assessed through an 11-point visual analogue scale (VAS) for dyschezia, dysmenorrhea, dyspareunia and chronic pelvic pain; surgical outcomes; and rate of urinary voiding dysfunction at 3-month follow up.Results: One-hundred patients were included: 69 in the P-group and 31 in the NPgroup. Preoperative and postoperative values of questionnaires, pain symptoms, and postoperative complication rates were comparable between the two groups, except for postoperative dyspareunia and sexual dysfunction, which were statistically higher in the P-group. Only patients in the P-group experienced urinary voiding dysfunction, but no statistical significance was reached (P = 0.173). Conclusion:Posterolateral parametrectomy for DIE appears to be associated with a higher risk of postoperative dyspareunia and sexual dysfunction.

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Background: The sentinel lymph node (SLN) mapping for endometrial cancer staging is gaining wide diffusion, but there is no definitive evidence on the factors associated with the failure of mapping. Objectives: To analyze the factors associated with the possible failure of bilateral SLN mapping with indocyanine green (ICG). Methods: A prospective observational study without control on 110 patients with endometrial cancer apparently confined to the uterus, underwent laparoscopic surgical staging with SLN mapping with ICG. Results: Possible risk factors associated with bilateral mapping failure were analyzed, and a multivariate analysis was performed. The bilateral detection rate for SLNs mapping was 72.7%, whereas at least one SLN was detected in 79.1% of patients. No SLNs were identified in 6.3%. None of the patients or features related to tumor were associated with a risk of failure of the method. The only factor analyzed that was significantly associated with the success of bilateral mapping was the surgeon (p = 0.003). Conclusions: Neither obesity nor the presence of lymph node metastases was associated with mapping failure. However, there remains a need for further studies to understand all the mechanisms linked to the unsuccessful method results and to reduce the use of systematic lymphadenectomy in the case of mapping failure.