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Long-term oncological safety of sentinel lymph node biopsy in early-stage cervical cancer: A post-hoc analysis of SENTICOL I and SENTICOL II cohorts

Abstract : Objectives: To compare oncologic outcomes of patients with early-stage cervical cancer and negative nodes who underwent sentinel lymph node biopsy alone (SLNB) versus pelvic lymphadenectomy (PL). Methods: An ancillary analysis of two prospective multicentric trials on SLN biopsy for cervical cancer (SENTICOL I and II) was conducted. Only patients with early-stage cervical cancer (IA to IIA FIGO stage), bilateral detection of SLN, negative SLN after ultrastaging and negative non-SLN after final pathologic examination were included. Risk-factors of recurrence and disease-specific mortality were determined by Cox proportional hazard models. Results: Between January 2005 and July 2012, 259 node-negative patients were analyzed: 87 in the SLNB group and 172 in the PL group. The median follow-up was 47 months [4-127]. During the follow-up, 21 patients (8.1%) experienced recurrences, including 4 nodal recurrences (1.9%), and 9 patients (3.5%) died of cervical cancer. Disease-free survival (DFS) and disease-specific survival (DSS) were similar between SLNB and PL groups, 85.1% vs. 80.4%, p = 0.24 and 90.8% vs. 97.2%, p = 0.22 respectively. By Cox multivariate analysis, SLNB compared to PL was not associated with DFS (HR = 1.78, 95%CI = [0.71-4.46], p = 0.22) neither with DSS (HR = 3.02, 95%CI = [0.69-13.18], p = 0.14). Only pathologic risk level according to the Sedlis criteria was an independent predictor of DFS and DSS. Conclusions: Omitting full pelvic lymphadenectomy for patients with bilateral negative SLN does not seem to be associated with an increased risk of recurrence in this series. Survival non-inferiority needs to be confirmed by prospective trials.
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Submitted on : Tuesday, January 18, 2022 - 11:43:25 AM
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Vincent Balaya, Benedetta Guani, Philippe Morice, Denis Querleu, Virginie Fourchotte, et al.. Long-term oncological safety of sentinel lymph node biopsy in early-stage cervical cancer: A post-hoc analysis of SENTICOL I and SENTICOL II cohorts. Gynecologic Oncology, Elsevier, 2022, 164 (1), pp.53-61. ⟨10.1016/j.ygyno.2021.10.074⟩. ⟨hal-03531729⟩

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