A varicocele is enlargement of the veins that transport oxygen-depleted blood clear of the testicle. Inside either side on the scrotum, a network of compact veins (pampiniform plexus) transportation the oxygen-depleted blood through the testicle to the key testicular vein. A varicocele may be the enlargement of your pampiniform plexus. https://www.sgvascularctr.com/a-guide-to-varicocele-treatment-in-singapore/