Per cutaneous Epididymal Sperm Aspiration

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The Per-cutaneous Epididymal Sperm Aspiration (PESA) technique is used to determine sperm counts in the event of a possible blockage of the vas deferens. A small needle is inserted through the skin of the scrotum, to collect sperm from the epididymis where sperm are usually stored after production in the testes.

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