PESA
Pronunciation: PEE-sah
Also written as: PESA — percutaneous epididymal sperm aspiration
Percutaneous epididymal sperm aspiration technique for retrieving sperm in cases of obstructive azoospermia.
Full Definition
Percutaneous epididymal sperm aspiration (PESA) is a minimally invasive surgical procedure used to obtain sperm directly from the epididymis in men with obstructive azoospermia. The procedure involves inserting a fine needle through the scrotal skin into the epididymis to aspirate fluid containing sperm. PESA is typically performed under local anesthesia and may be repeated if insufficient sperm are obtained. This technique is used when normal sperm transport is blocked due to congenital absence of vas deferens, previous vasectomy, or epididymal obstruction. Retrieved sperm are used immediately for ICSI or cryopreserved for future use.
Usage
Usage note: Less invasive than MESA but may yield fewer sperm
In Context
- "PESA was performed under local anesthesia to retrieve sperm for ICSI." — Surgical procedure note
- "The urologist recommended PESA as first-line treatment for obstructive azoospermia." — Treatment consultation