How does varicocele affect male fertility, and what is a common treatment consideration?

• A. It improves spermatogenesis.
• B. It can impair spermatogenesis via increased scrotal temperature; microsurgical varicocelectomy may improve semen parameters in selected men.
• C. It has no impact on fertility.
• D. Antibiotics alone are sufficient.

Answer: (B)

Varicocele can impair male fertility mainly because pooling of venous blood in the pampiniform plexus raises scrotal temperature. The testes need a cooler environment for optimal sperm production, and heat stress can disrupt spermatogenesis, leading to lower sperm count, poorer motility, and abnormal morphology in many men with infertility related to a varicocele. A common treatment consideration is microsurgical varicocelectomy in carefully selected men with infertility and a palpable varicocele; this procedure aims to reduce venous reflux and improve the testicular environment, which can lead to improvements in semen parameters and, in some cases, fertility. Antibiotics alone are not a treatment for varicocele, and the condition does not always have no impact on fertility, as heat-related effects can be mitigated with surgery in selected patients.