PERCUTANEOUS EPIDIDYMAL SPERM ASPIRATION (PESA)
PESA is indicated for men with irreparable obstruction resulting in Azoospermia (lack of or no sperm), congenital absence of the deferens or who have had vasectomies or failed vasectomy reversals. The procedure takes approximately 10 to 20 minutes unlike epididymal aspiration, does not require a surgical incision. A small needle is passed directly into the head of the epididymis and fluid is aspirated. Next, the IVF laboratory team retrieves the cells from the fluid and prepares them for ICSI because of the amount secured.
MICROSCOPIC EPIDIDYMAL SPERM ASPIRATION (MESA)
Microscopic Epididymal Sperm Aspiration (MESA) is slightly more invasive method than PESA and uses microsurgical techniques to collect sperm from the epididymis.TESTICULAR TISSUE SPERM EXTRACTION (TESE)
Surgical removal of a portion of the testes for patients that are good candidates for PESA because of absence of the vas deferens. In the andrology laboratory, tissue is homogenized (minced) & individual sperm is harvested for ICSI.
