Incidence of contralateral patent processus vaginalis in children with inguinal hernia

Area of Science:

• Pediatric Surgery
• Laparoscopic Surgery
• Anatomy

Background:

• Inguinal hernias in children often present unilaterally.
• The presence of a contralateral patent processus vaginalis (PPV) is a concern for recurrence and requires careful consideration.
• Direct laparoscopic inspection offers a precise method for evaluating the contralateral inguinal ring.

Purpose of the Study:

• To determine the incidence of contralateral patent processus vaginalis (PPV) in pediatric patients with unilateral inguinal hernias.
• To assess the size and characteristics of contralateral PPVs identified during laparoscopic repair.
• To provide data-driven insights into the prevalence of contralateral PPV in this population.

Main Methods:

• A prospective study involving 143 children (96 boys, 47 girls) with clinically unilateral indirect inguinal hernias.
• All patients underwent laparoscopic hernia repair.
• Direct laparoscopic inspection of the contralateral internal inguinal ring was performed to identify and evaluate PPVs.

Main Results:

• The incidence of wide-open contralateral PPVs varied by sex and hernia side, ranging from 11% in girls with right hernias to 38% in girls with left hernias.
• Boys with right hernias showed a 26% incidence of wide-open contralateral PPVs, while boys with left hernias had a 30% incidence.
• Small contralateral openings were observed in 15% to 20% of cases across all groups.

Conclusions:

• Contralateral patent processus vaginalis (PPV) appears to be less common than previously suggested by historical data.
• Laparoscopic evaluation provides accurate assessment of contralateral PPV incidence.
• Findings suggest a potential need to revise assumptions regarding routine contralateral exploration in pediatric inguinal hernia cases.