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TESE vs TESA – Alternative Methods for Retrieving Sperm

TESE vs TESA – Alternative Methods for Retrieving Sperm

In the past, men who produced ejaculate with no viable sperm or who could not produce ejaculate at all were considered sterile. Advancing techniques such as testicular sperm extraction (TESE) and testicular sperm aspiration (TESA) provide hope and biological offspring to men by locating and removing even just a few sperm located in the tissue or in the testicular fluid. If the procedure is successful, an embryologist uses a technique called intra-cytoplasmic sperm injection to fertilize the egg. In this case, a single sperm is directly injected into the egg for fertilization.

TESE involves a surgical biopsy of the testis whereas TESA involves sticking a needle in the testis and aspirating fluid. TESE used to require general anesthesia but more urologists and andrologists now perform the procedure with a cord block. According to a study published in the Journal of Andrology from 2006, researchers in Tel Aviv, Israel illustrated that TESE produces more quality sperm with better motility than TESA.

These procedures can be very useful fertility preservation measures for adolescent boys and men who are unable to produce a sample when facing cancer treatment. Visit http://www.youtube.com/watch?v=6351uZSwDps to see a video of a TESE procedure. 

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