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Systematic review and meta-analysis comparing outcomes following orchidopexy for cryptorchidism before or after
B S R Allin1,2, E Dumann3, D Fawkner-Corbett2
1National Perinatal Epidemiology Unit University of Oxford Oxford UK.
Insights
Early orchidopexy (before 1 year) for cryptorchidism shows no difference in atrophy or complication rates compared to delayed surgery. However, early intervention may improve fertility potential, though data imprecision limits conclusions.
Area of Science:
- Pediatric Surgery
- Urology
- Developmental Biology
Background:
- Current guidelines recommend orchidopexy for cryptorchidism by 12 months of age.
- Adherence to this guideline is not universal.
- This study compares outcomes of early versus delayed orchidopexy.
Purpose of the Study:
- To compare outcomes between orchidopexies performed before and after 1 year of age for cryptorchidism.
- To evaluate testicular atrophy, fertility potential, and postoperative complications.
- To assess the impact of surgical timing on testicular outcomes.
Main Methods:
- Systematic review and meta-analysis of MEDLINE and Embase databases (searched September 2015).
- Included studies compared early (<1 year) versus delayed (≥1 year) orchidopexy.
- Exclusion criteria: >50% intra-abdominal testes or disorders of sexual differentiation.
Main Results:
- No significant difference in testicular atrophy rates between early and delayed orchidopexy (912 testes).
- Early orchidopexy was associated with greater testicular volume and more spermatogonia per tubule (382 testes).
- No difference in postoperative complication rates was observed (426 testes).
Conclusions:
- Orchidopexy timing (early vs. delayed) does not appear to affect atrophy or complication rates.
- Early orchidopexy may offer better fertility potential.
- Data imprecision limits the certainty of these findings.
Background:
Current guidelines recommend orchidopexy for cryptorchidism by 12 months of age, yet this is not universally adhered to. The aim of this systematic review and meta-analysis was to compare outcomes between orchidopexies performed before and after 1 year of age.
Methods:
MEDLINE and Embase were searched (September 2015) using terms relating to cryptorchidism, orchidopexy and the outcomes of interest. Studies were eligible for inclusion if they compared orchidopexy at less than 1 year of age (early) with orchidopexy at 1 year or more of age (delayed) and reported the primary outcome (testicular atrophy) or one of the secondary outcomes (fertility potential, postoperative complication, malignancy). Studies were excluded when more than 50 per cent of infants had intra-abdominal testes, or the population included infants with disorders of sexual differentiation. Additional studies were identified through reference list searching. Unpublished data were sought from the ORCHESTRA study investigators.
Results:
Fifteen eligible studies were identified from 1387 titles. There was no difference in atrophy rate between early orchidopexy and delayed orchidopexy (risk ratio 0·64, 95 per cent c.i. 0·25 to 1·66; 912 testes). Testicular volume was greater (mean difference 0·06 (95 per cent c.i. 0·01 to 0·10) ml; 346 testes) and there were more spermatogonia per tubule (mean difference 0·47 (0·31 to 0·64); 382 testes) in infants undergoing early orchidopexy, with no difference in complication rate (risk ratio 0·68, 0·27 to 1·68; 426 testes). No study reported malignancy rate.
Conclusion:
Atrophy and complication rates do not appear different between early and delayed orchidopexy, and fertility potential may be better with early orchidopexy. Imprecision of the available data limits the robustness of these conclusions.
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