Peritoneal Flap Following Lymph Node Dissection in Robotic Radical Prostatectomy: A Novel "Bunching" Technique

Ahmed Gamal; Marcio Covas Moschovas; Abdel Rahman Jaber; Shady Saikali; Marco Sandri; Ela Patel; Evan Patel; Travis Rogers; Vipul Patel

doi:10.3390/cancers16081547

Peritoneal Flap Following Lymph Node Dissection in Robotic Radical Prostatectomy: A Novel "Bunching" Technique

Cancers (Basel). 2024 Apr 18;16(8):1547. doi: 10.3390/cancers16081547.

Authors

Ahmed Gamal¹, Marcio Covas Moschovas^{1

2}, Abdel Rahman Jaber¹, Shady Saikali¹, Marco Sandri³, Ela Patel⁴, Evan Patel¹, Travis Rogers¹, Vipul Patel^{1

2}

Affiliations

¹ AdventHealth Global Robotics Institute, Celebration, FL 34747, USA.
² Urology Department, University of Central Florida (UCF), Orlando, FL 32816, USA.
³ Big and Open Data Innovation Laboratory (BODaI-Lab) and Data Methods and Systems Statistical, 25123 Brescia, Italy.
⁴ Stanford University, Palo Alto, CA 94305, USA.

Abstract

Background: Pelvic lymph node dissection (PLND) is recommended while performing robot-assisted radical prostatectomy (RARP) for patients with localized intermediate or high-risk prostate cancer. However, symptomatic lymphoceles can occur after surgery, adding significant morbidity to patients. Our objective is to describe a novel Peritoneal Bladder Flap Bunching technique (PBFB) to reduce the risk of clinically significant lymphoceles in patients undergoing RARP and PLND.

Methods: We evaluated 2267 patients who underwent RARP with PLND, dividing them into two groups: Group 1, comprising 567 patients who had the peritoneal flap (PBFB), and Group 2, comprising 1700 patients without the flap; propensity score matching carried out at a 1:3 ratio. Variables analyzed included estimated blood loss (EBL), operative time, postoperative complications, lymphocele formation, and the development of symptomatic lymphocele.

Results: The two groups exhibited similar preoperative characteristics after matching. There was no statistically significant difference in the occurrence of lymphoceles between the flap group and the non-flap group, with rates of 24% and 20.9%, respectively (p = 0.14). However, none of the patients in the flap group (0%) developed symptomatic lymphoceles, whereas 2.2% of patients in the non-flap group experienced symptomatic lymphoceles (p = 0.01).

Conclusion: We have demonstrated a modified technique for a peritoneal flap (PBFB) with the initial elimination of postoperative symptomatic lymphoceles and promising short-term outcomes.

Keywords: lymphocele; pelvic lymph node dissection; peritoneal flap; radical prostatectomy; robot-assisted; symptomatic lymphoceles.

Grants and funding

The authors declare that no funds, grants, or other support were received during the preparation of this manuscript. The authors have no relevant financial or non-financial interests to disclose.