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Flexible transinguinal laparoscopy to assess the contralateral ring in pediatric inguinal hernias
C P Pavlovich1, G A Gmyrek, T A Gardner
1James Buchanan Brady Foundation, Department of Urology, New York Hospital-Cornell University Medical Center, New York 10021, USA.
Insights
Transinguinal laparoscopy using flexible urologic instruments is an effective method for diagnosing contralateral patent processus vaginalis (CPPV) in infants with unilateral inguinal hernia. This approach avoids unnecessary contralateral exploration, with no hernias developing in patients deemed closed at follow-up.
Area of Science:
- Pediatric Surgery
- Minimally Invasive Surgery
- Urology
Background:
- Contralateral patent processus vaginalis (CPPV) occurs in over 50% of infants with clinical unilateral inguinal hernia (CUIH).
- Routine contralateral inguinal exploration is often performed, but transinguinal laparoscopy offers a less invasive diagnostic alternative.
- Technical challenges can limit the efficacy of standard transinguinal laparoscopy.
Purpose of the Study:
- To evaluate the ease and efficacy of transinguinal laparoscopy for diagnosing CPPV in pediatric patients.
- To assess the utility of flexible urologic instruments and angled cystoscopic lenses in simplifying the procedure.
- To determine the long-term outcomes of patients diagnosed with CPPV using this technique.
Main Methods:
- A 3-year prospective study involving 37 pediatric patients (4 months to 12 years) with CUIH.
- Transinguinal laparoscopy was performed using flexible 17F cystoscopes, flexible 9F ureteroscopes, or rigid 70-degree cystoscope lenses.
- Follow-up evaluation was conducted to monitor for the development of contralateral hernias.
Main Results:
- Eight cases (22%) of CPPV were detected among 37 patients.
- The mean operative time for transinguinal laparoscopy was 4.5 minutes.
- No contralateral hernias developed during a mean follow-up of 26 months in patients whose contralateral inguinal ring was deemed closed.
Conclusions:
- Flexible fiberoptic urologic scopes and angled cystoscope lenses significantly enhance the ease and efficacy of transinguinal laparoscopy in pediatric CPPV diagnosis.
- This minimally invasive approach effectively identifies CPPV, potentially reducing the need for routine contralateral exploration.
- The study represents the longest longitudinal follow-up of transinguinal laparoscopy for CPPV diagnosis, demonstrating favorable outcomes.
Abstract:
The incidence of contralateral patent processus vaginalis (CPPV) is >50% in infants with clinical unilateral inguinal hernia (CUIH) and decreases only slowly with advancing age. Laparoscopy through the hernia sac (transinguinal laparoscopy) to detect suspected CPPV is a safe and efficient way to minimize routine contralateral inguinal exploration, but can be technically difficult. We used flexible urologic instruments and/or angled cystoscopic lenses to make transinguinal laparoscopy easier. Over a 3-year period, 37 patients (34 boys and 3 girls) ranging in age from 4 months to 12 years (mean age 59 months) with CUIH underwent ipsilateral groin exploration and diagnostic transinguinal laparoscopy. Laparoscopy was performed with flexible 17F cystoscopes (26 cases), flexible 9F ureteroscopes (2 cases), and rigid 70 degrees cystoscope lenses (9 cases). We detected eight CPPV (22%) in our series of 20 right and 17 left inguinal hernias, in a mean transinguinal laparoscopy time of 4.5 minutes. At 26-month mean follow-up, no patient whose contralateral inguinal ring was deemed closed had developed a hernia. Flexible fiberoptic urologic scopes and/or angled cystoscope lenses make transinguinal laparoscopy easy and efficacious in the pediatric population. Our series represents the longest longitudinal study of transinguinal laparoscopy for the diagnosis of CPPV.