Microsurgical Epididymal Sperm Aspiration (MESA) and Testicular Sperm Extraction (TESE)
MESA and TESE are both surgical methods of collecting living, motile sperm when there is none present in ejaculate—an occurrence known as azoospermia.
In MESA, semen is extracted from the epididymis by light suction through a needle. This procedure is typically employed in cases of non-obstructive azoospermia, a condition in which no sperm is present in semen, due to an abnormality in the production of sperm.
