Surgical sperm retrieval (TESA and TESE)

TESA stands for testicular sperm aspiration and TESE for testicular sperm extraction. These are techniques to obtain sperm from the testis of men who have no sperm in their ejaculate (azoospermia) or who are unable to produce an ejaculate. Both procedures are performed under surgical conditions. Sperm obtained from the testicular tissue can be used fresh, if the procedure is performed on the same as the egg collection procedure, or can be frozen and stored until required.