Robotic Surgical Outcomes in Endometrial Cancer: Does Class III Obesity Matter?

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Background/Objective: Women with Class III obesity (BMI ≥ 40 kg/m2) have a lifetime risk of endometrial cancer (EC) as high as 10–15%. However, evidence focused specifically on Class III obese patients remains limited. This study evaluated the surgical feasibility and safety of robotic surgery in Class III obese women with EC. Methods: A single-center retrospective study was conducted at the ESGO-accredited University Hospital of Parma (Italy) from October 2021 to February 2025. All women had apparent early-stage EC and underwent robotic hysterectomy with bilateral salpingo-oophorectomy and sentinel lymph node (SLN) mapping with Indocyanine Green. Patients were categorized into three BMI groups: Group A (BMI ≥ 40 kg/m2), Group B (BMI 30–39 kg/m2), and Group C (BMI < 30 kg/m2). Perioperative variables—including operative time, estimated blood loss, conversion to laparotomy, intra- and postoperative complications, hospital and Intensive Care Unit (ICU) stay, and SLN mapping failure—were compared across groups. Results: A total of 109 women were included: 26 (23.9%) in Group A, 45 (41.3%) in Group B, and 38 (34.9%) in Group C. Class III obesity was not associated with higher intraoperative (p = 0.390) or postoperative (p = 0.805) complication rates. Conversion to laparotomy (p = 0.720), estimated blood loss (p = 0.123), ICU stay (p = 0.156), and hospital stay (p = 0.491) were superimposable across groups. Operative time was significantly longer in Group A (p = 0.003) compared to the other groups. Successful bilateral SLN mapping differed significantly across groups (p = 0.026), being lower in Group A (73.1%) compared to Group B (95.6%) and Group C (81.6%). Conclusions: Robotic surgery is safe and feasible in Class III obese EC patients, with perioperative morbidity comparable to that of lower BMI groups. Nevertheless, longer operative times and a lower rate of successful bilateral SLN mapping highlight the need for tailored strategies and further research to optimize nodal staging in severely obese women.

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