Fertility Glossary

PESA

Percutaneous epididymal sperm aspiration.

Sperm are drawn through the skin from the epididymis with a fine needle. It is typically used in obstructive azoospermia, for example after vasectomy or infection.

Related terms

Surgical sperm retrieval

Collecting sperm directly from the testis or epididymis.

MESA

Microsurgical epididymal sperm aspiration.

Azoospermia

No sperm found in the ejaculate.

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