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).
Successful sperm production and delivery relies on a system of tubes located within the male reproductive system. Initial production of sperm occurs in fine, tightly coiled tubes located within the testes, known as seminiferous tubules. The seminiferous tubules are connected to a long, coiled tube called the epididymis. The epididymis is in turn connected to another tube called the vas deferens. In order to produce ejaculate