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The value of laparoscopy for impalpable testes
R A Brown1, A J Millar, L D Jee
1Department of Paediatric Surgery, University of Cape Town.
Summary
Laparoscopy is a safe and effective tool for diagnosing impalpable testes in children. This minimally invasive technique accurately locates testes, avoiding unnecessary surgery and improving treatment planning for undescended testes.
Area of Science:
- Pediatric Surgery
- Urology
- Minimally Invasive Surgery
Background:
- Impalpable testes are a common diagnostic and therapeutic challenge, occurring in up to 20% of undescended testis cases.
- Preoperative knowledge of testicular location is crucial for surgical planning and avoiding blind inguinal exploration.
- Conventional imaging techniques are often time-consuming, expensive, and lack definitive accuracy in locating impalpable testes or confirming their absence.
Purpose of the Study:
- To evaluate the efficacy and safety of laparoscopy in identifying the presence and location of impalpable testes in children.
- To assess laparoscopy's role in guiding surgical strategy and potentially avoiding extensive groin explorations.
- To determine if laparoscopy can be combined with the first stage of divided-vessel orchidopexy.
Main Methods:
- Laparoscopic examination was performed on 50 children with 60 impalpable testes (40 unilateral, 10 bilateral) prior to groin exploration.
- Standardized laparoscopic techniques, including open perumbilical trocar insertion, were employed.
- Surgical management was based on laparoscopic findings, including standard orchidopexy, divided-vessel orchidopexy, or removal of testicular remnants.
Main Results:
- Laparoscopy identified an inguinal testis missed on palpation in 5 (8%) cases.
- Testicular absence was confirmed in 23 (38%) cases, leading to limited negative groin exploration in 13.
- Intra-abdominal testes were identified in 30 (50%) cases, with 14 undergoing standard orchidopexy and 16 requiring divided-vessel orchidopexy. Two cases involved removal of testicular remnants.
- No operative morbidity was reported.
Conclusions:
- Laparoscopy is a valuable and safe technique for managing impalpable testes in children, accurately identifying testicular location in 60% of cases.
- This approach spares approximately 40% of patients from the morbidity associated with extensive groin explorations.
- Laparoscopy facilitates precise surgical planning and can be integrated with operative procedures like orchidopexy.