[Pediatric and adolescent varicocele - When, why and how to treat?].

The treatment of a varicocele in childhood and adolescence is considered very controversial. In the past varicocele was often diagnosed during the medical examination for military purposes, but today varicocele is common in the J1 exam and is found rather frequently. However, we are still lacking evidence-based recommendations. This means that urologists and paediatric urologists are increasingly confronted with the question of whether intervention is necessary or not.The literature on this is very contradictory. Systematic reviews and meta-analyses have recently shown that there are only modest benefits of intervention in terms of testicular size and spermiogram quality. Solid data on the impact on paternity rates are still lacking. However, it has been shown that if an intervention is to be made, the lymphatic sparing techniques have a distinct advantage.Possible indications for intervention may be the persistent difference in size of the testes (> 20 % for at least 6 months), a symptomatic varicocele (very subjective criterion), a pathological spermiogram (better 2), and possibly the presence of additional fertility-limiting factors.