www.ivfbaby.com Percutaneous Epididymal Sperm Aspiration or PESA. A needle is passed through the scrotal skin and into the epididymis in order to aspirate sperm. Because the epididymal tubule is very delicate and convoluted, the yield with a needle is typically small and usually only sufficient for a single cycle of IVF-ICSI performed on the same [...]
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