Vasectomy - operation excision of the VAS duct. Produce for the prevention of epididymitis in surgical treatment of adenoma prostate gland. Under local anesthesia at the base of the scrotum allocate the ductus deferens and a small part of it (1,5-2 cm) excised between the two ligatures. After this operation the endocrine function of the testis long stays within the normal range.