Azoospermia, the finding of no sperm in the ejaculate, is one of the results in a semen analysis that understandably causes the most concern, and I want to be clear with couples who receive this result: the absence of sperm in the ejaculate does not necessarily mean that there are no sperm in the body, and it does not necessarily mean that biological fatherhood is impossible. The critical first step is to determine whether the azoospermia is obstructive or non-obstructive. Obstructive azoospermia means that sperm are being produced normally in the testes but cannot reach the ejaculate because the reproductive tract is blocked, most commonly due to previous vasectomy, infection causing scarring of the vas deferens or epididymis, or congenital absence of the vas deferens. In obstructive azoospermia, sperm are present in the testes and can be retrieved surgically using PESA (percutaneous epididymal sperm aspiration) or TESA (testicular sperm aspiration) and used to fertilise eggs through ICSI. Non-obstructive azoospermia means that sperm production is severely impaired or absent, due to hormonal causes, genetic factors, or prior testicular damage. In some cases of non-obstructive azoospermia, sperm may still be found in specific areas of the testes through a microsurgical TESE (testicular sperm extraction) procedure even when the ejaculate contains none. The management of azoospermia always begins with a thorough urological and hormonal evaluation to establish the cause and determine the most appropriate sperm retrieval approach before any IVF treatment is planned.
Written by Dr. Sudharani Bairraju, DNB OBG, Postgraduate Certification Clinical Embryology, Training Advanced Infertility and Andrology, Senior Consultant IVF Specialist, Birthright Fertility by Rainbow Hospitals, Banjara Hills, Hyderabad. Phone: 07337390606.
