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Obstructive azoospermia (OA) is characterized by normal spermatogenesis and the absence of sperm in the ejaculate. Variable success rates have been reported using in-vitro fertilization (IVF) combined with PESA in cases of men with OA.

A single-center study examining the outcomes of percutaneous epididymal sperm aspiration in the treatment of obstructive azoospermia