Incidence, Predictive Factors and Preventive Measures for Inguinal Hernia following Robotic and Laparoscopic Radical Prostatectomy: A Systematic Review

Purpose: Inguinal hernia is a known sequel of radical prostatectomy which contributes to patient morbidity and health care expenditure. In this systematic review we evaluated the incidence of inguinal hernia associated with minimally invasive radical prostatectomy, in addition to predictive factors and preventive measures. Materials and Methods: We searched PubMed® and Embase® between 2000 and February 2018 using the search terms inguinal hernia and radical prostatectomy. Results: In concordance with search terms and selection criteria we identified a total of 155 reports with 27 studies eligible for inclusion. Collated results demonstrated a variable prevalence of inguinal hernia after laparoscopic radical prostatectomy and robotic assisted radical prostatectomy ranging from 4.3% to 8.3% and from 3% to 19.4 %, respectively. There was a higher mean prevalence of inguinal hernia after robotic assisted prostatectomy. Factors predicting inguinal hernia following minimally invasive radical prostatectomy included low body mass index, poor stream and straining prior to prostatectomy detected on symptom score instruments, a patent processus vaginalis or an intraoperative incidental inguinal hernia. Herniotomy or herniorrhaphy with onlay mesh repair was the most commonly reported intraoperative repair technique at the time of minimally invasive radical prostatectomy. Recurrence of repaired incidental hernia is rare. Conclusions: Inguinal hernia is common after minimally invasive radical prostatectomy. There is a lack of high level evidence to clarify risk factors and preventive strategies for inguinal hernia after minimally invasive radical prostatectomy. There is a justification for randomized controlled trials to further evaluate this under recognized clinical problem.