“Commonly, valves in these extensive spermatic veins protect against back stress, but in the event the valves fall short, this extended column of blood through the kidney area down to the testicle can result in dilation [widening] with the veins while in the scrotum.” Whilst any male can establish varicoceles, https://www.sgvascularctr.com/a-guide-to-varicocele-treatment-in-singapore/