MESA / TESE
In case of azoospermia (absence of any living sperm cells in the ejaculate) it is sometimes possible to retrieve sperm through surgical methods known as MESA or TESE.
MESA (Micro Epididymal Sperm Aspiration)
This procedure involves microsurgical aspiration (suction) of sperm from the epididymis - this operation is performed if transport of sperm between epididymis and the urethra is occluded. This operation is almost exclusively performed under general anaesthesia as an open surgery. Approximately 3 cm long incision is made on the scrotum, allowing access to the epididymis, which is reached by pipette and liquid is aspired from the ducts. The retrieved liquid is thoroughly analysed at embrylogical laboratory during the operation. If it contains live sperm cells they are used for fertilising the eggs through ICSI method.
TESE (Testicular Sperm Extraction)
In case that no sperm was retrieved using the MESA technique, we perform the TESE procedure. It allows for extracting sperm cells, if they are present, from the ducts of the germinal epitelium in cases when they are unable of releasing or transport from the testicle to the epididymis.
This operation follows the previous MESA procedure. Small incisions are made in the testicular sheets and a little of the testicular tissue is retrieved. The tissue is further processed at the laboratory. If live sperm cells are found, they are used tofertilise the eggs in the ICSI method.