In selected cases of men with azoospermia there is the option of sperm retrieval using microsurgery techniques followed by fertilization of eggs retrieved from the woman by use of the ICSI technique. The most frequently used techniques are: microsurgical epididymidal sperm aspiration (MESA), testicular sperm extraction (TESE), and testicular sperm aspiration (TESA). These techniques have given impressive results and much of success in cases of men with azoospermia who in the past would have to seek use of donor sperm.