Abstract
Azoospermia, defined as complete absence of sperm from the ejaculate, is present in less than 1% of all men and in 10 to 15 percent of infertile men. Although there are many causes of azoospermia, obstruction of the ductal system is responsible for approximately 40% of cases (1). Obstructive azoospermia may result from epididymal, vasal, or ejaculatory duct pathology. Vasectomy is the most common cause of vasal obstruction. Severe genitourinary infections, iatrogenic injury during scrotal or inguinal surgical procedures and congenital anomalies are other common causes of obstructive azoospermia.
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