Varicoceles are swollen veins in the scrotum. They typically cause moderate symptoms, which include scrotal swelling or aching pain in the testicle. Using an X-ray for guidance, the catheter is guided for the testicular vein, and contrast is injected to map out the situation place so it can be blocked https://www.sgvascularctr.com/a-guide-to-varicocele-treatment-in-singapore/