Combined Robotic and Vaginal Surgery for Pelvic Exenteration Due to Vaginal Sarcoma Relapse in an Obese Woman

Abstract

Study objective: Pelvic exenteration (PE) is an aggressive surgical procedure that implies a large hard-to-fill pelvic defect. Different reconstruction techniques were proposed to improve abdominal organ support and reduce complications (infections, pelvic organs herniation, vaginal stump dehiscence, bowel prolapse and obstruction) [1], with conflicting results [2]. Because of young age and survival greater than 50% at 5 years in patients with no residual tumor after surgery [3], a new approach with better clinical results to pelvic reconstruction is needed.

Design: The aim of this surgical film is to present an unusual presentation of vaginal sarcoma, successfully managed with a minimally invasive approach, and to illustrate our contextual multilayer technique of pelvic reconstruction using a combination of pedicled omental flap (POF) and human acellular dermal matrix (HADM).

Setting: Tertiary level academic hospital. A 42-year-old obese patient with recurrent and symptomatic myxoid leiomyosarcoma, previously underwent vaginal-assisted laparoscopic surgery at a primary care center for the removal of a vaginal swelling.

Interventions: The multidisciplinary board determined anterior PE as the optimal therapeutic approach. Given the patient's body mass index (33 kg/m²), young age, and the favorable outcomes of robotic surgery in obese patients compared with other approaches [3,4], we proposed a combined robotic and vaginal surgery for both exenteration and reconstructive procedures [5]. During surgery, we initially explored the abdominal cavity to exclude macroscopic metastasis, followed by anterior PE. Urinary diversion was achieved with a Bricker ileal conduit by means of an ileoileal laterolateral anastomosis and an uretero-ileo-cutaneostomy. The pelvic dead space was partially filled with a POF on the left gastroepiploic artery. Subsequently, the pelvic defect was covered by a 15 × 10 mm HADM inlay inserted circumferentially at the pelvic brim, fixed with a barbed thread suture on residual pelvic structures. The final pathology confirmed the recurrence of myxoid leiomyosarcoma and indicated tumor-free resection margins. The intraoperative and postoperative periods were uneventful. The patient was discharged 14 days after surgery and underwent adjuvant doxorubicin- and dacarbazine-based chemotherapy, which was initiated 45 days after the surgery. Currently the patient is asymptomatic and disease free at the sixth month of follow-up.

Conclusion: Robotic PE proves to be a feasible technique in obese patients, reducing postoperative hospital stay and complications. The contextual pelvic floor reconstruction with a POF and HADM supports abdominal viscera, diminishing interorgan adhesions and bowel prolapse. VIDEO ABSTRACT.

Keywords: Bricker diversion; Combined technique; Minimally invasive surgery; Pelvic reconstruction; Robotic surgery.