Varicocelectomy is the procedure in which the bulged veins on scrotum are removed. This is done using a laparoscope (called laparoscopic varicocelectomy) or through an incision, conventional style of varicocele surgery.
Scrotum is the sack that holds the testicles. Connecting to those testicles are several tubes including nerves, arteries, veins, spermatic cords etc. Varicocele is the enlargement of a veins connected to the testicle. These veins are called Pampiniform Plexus.