In men with obstructive azoospermia, both percutaneous epididymal sperm aspiration (PESA) and microsurgical epididymal sperm aspiration (MESA) are effective means to obtain sperm for IVF! Make sure to talk with your local
Microsurgical epididymal sperm aspiration (MESA) by PrincessPi52 on DeviantArt
Percutaneous Epididymal Sperm Aspiration | PESA Treatment in Jalgaon
Sperm retrieval techniques (Chapter 5) - Human Assisted Reproductive Technology