PESA : Percutaneous Epididymal Sperm Aspiration
TESE : Testicular Sperm Extraction
Epididymal / Testicular sperm aspiration is for men with absence of sperm in the ejaculate. The sperms are extracted from epididymis or from the testicular end by surgical procedure or by suction using a needle. The sperms so extracted are utilized for insemination during invitro fertilization. This same method is used for test tube baby process in case of infertile women or men.