MUNICH — Even a small varicocele can significantly affect sperm quality and fertility in an otherwise healthy young man, according to a population-based study of more than 7000 army recruits in six ...

Varicocele, the leading cause of male infertility, can impair spermatogenesis through several pathophysiological mechanisms. Of these, current evidence suggests that oxidative stress is the central ...

During adolescence, the risk of developing a varicocele increases. Prevalence is less than 1% in boys aged younger than 10 years, but approaches that of the general adult population (about 15%) during ...

Varicoceles are distended, enlarged testicular veins that may feel like a bag of worms in a man's scrotum. Varicoceles can occur on one side within the scrotum or on both sides. They usually appear ...