Varicocele n. : A varicose enlargement of the veins of the spermatic cord; also, a like enlargement of the veins of the scrotum.

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Taxonomy
varicocele, veins, drains, surgery, pampiniform plexus, dilatation, blood, vessels, free encyclopedia, abdomen, spermatic cord, compression, Symptoms, left renal vein, varicose veins, pressures, cause infertility, gonadal vein.

Defination from the web:
Varicocele is an abnormal enlargement of the vein that is in the scrotum draining the testicles. ... Defective valves, or compression of the vein by a nearby structure, can cause dilatation of the veins near the testis, leading to the formation of a varicocele. ...