Is It Safe To Follow Embolization For Varicocele?

I have been suffering from varicocele since 5 years but didnt take up any treatment.My left testicle is much like a bag of worms and sometimes i feel pain in it.Now, if i plan an embolization, does the look of my testicle return to normal?since the treatment involves installing small coils inside scrotum, does that mean the size remains unaltered?or inturn does it add to the size?please respond.