Testicular Sperm Aspiration, TESA

In some forms of male infertility the spermatozoids are absent completely (for example, blocade of deferens of ductus or in case of its innate absence).
If the sperm is produced, but the problem lies in the carrying of the sperm into the semen fluid, semen can be extracted by the aspiration of spermatazoids from testicular tissue - TESA.
 

A TESA procedure involves a needle biopsy of the testicle in which a sample of testicular tissue is taken directly from the testis and used to extract sperm. The procedure is done either under local or general anaesthesia. If enough sperm is found, it can be frozen for future use. The procedure can be repeated on the day the egg cells are collected.
 

The fertilization of female eggs with sperm extracted from the testis is only possible with the ICSI method, where one single live sperm is injected directly into each egg. Sperm extracted from the testis also enables possible conception with clients’ own gametes in a new life situation where the man has had a vasectomy but still wants a child.