Risk of Inguinal Hernia Repair Following Laparoscopic Living Donor Nephrectomy: A Population-Based Cohort Study

Area of Science:

• Urology
• Nephrology
• Surgical Outcomes

Background:

• A previous study indicated a higher risk of hydrocelectomy in male living kidney donors post-laparoscopic nephrectomy.
• Shared anatomical pathways suggest a potential link between kidney donation surgery and inguinal hernia formation.

Purpose of the Study:

• To compare the long-term incidence of inguinal hernia repair in male living kidney donors versus nondonors.
• To assess the donation-attributable risk of inguinal hernia repair following laparoscopic donor nephrectomy.

Main Methods:

• A population-based, retrospective matched cohort study utilized linked health administrative data from Ontario, Canada.
• 848 male living kidney donors were matched 1:10 to 8480 nondonors, excluding individuals with prior scrotal conditions or hernia repair.
• Cox proportional hazards models and Aalen-Johansen methods were used to assess inguinal hernia repair risk, with death as a competing event.

Main Results:

• Over a median follow-up of 8.8 years, 4.7% of donors and 3.4% of nondonors underwent inguinal hernia repair.
• Living kidney donors showed a modestly higher risk of inguinal hernia repair (HR 1.40; P=0.043).
• The cumulative incidence of inguinal hernia repair post-laparoscopic donor nephrectomy was comparable to other renal and abdominal surgeries.

Conclusions:

• The risk of inguinal hernia repair attributable to kidney donation is modest and not as pronounced as the risk for hydrocele repair.
• The findings support current practices for counseling and selecting prospective kidney donors.
• Inguinal hernia repair does not appear to be a significant long-term concern warranting specific consideration in donor evaluation.