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If no sperm cells are found in a man's sperm because, for example, the vas deferens are blocked or absent, it is possible to obtain fertilisable sperm cells from the epididymis.

The sperm cells obtained in this microsurgical epididymal sperm aspiration (MESA) by puncturing the epididymis can then be used for microinjection (ICSI). Sperm cells isolated directly from the testicular tissue (testicular sperm extraction, TESE) can also be used for microinjection (ICSI). Both MESA and TESE are performed by us in cooperation with experienced urologists Both procedures require only very short surgical interventions.