Percutaneous Epididymis Sperm Aspiration (PESA) and Testicular Sperm Aspiration (TESA) are surgical procedures that may be used to find sperm where the male partner does not have sperm in his ejaculate (also known as azoospermia).
Sperm aspiration from the epididymis or testicle – PESA or TESA – and then ICSI and IVF
Sperm can be aspirated with a needle from the testicle or from the vas deferens (a structure right next to the testicle that also contains sperm).
The man is given general anaesthesia and then a small needle is inserted and sperm is aspirated from either the epididymis or the testicle. There should be no severe pain. The procedure generally takes about 30 minutes.