The remaining renal veins and gonadal veins have been then cannulated, and embolisation in the gonadal vein and varicocele was performed with metallic coils thus blocking it off. Microscopic varicocelectomy: This entails a urologist ligating (clamping or tying) all smaller veins by way of a 1cm incision over the scrotum, https://sgvasculargrp.com/medical-condition/scrotal-pain-varicocele/