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Cryopreservation (Freezing)

Cryopreservation of sperm or testicular-tissue freezing

Cryopreservation and tumorous diseases

Cancer or treatment for cancer (chemotherapy, radiotherapy) can lead to a significant reduction in fertility in men.

Cryopreservation if sperm samples

By freezing sperm before any cancer treatment, it can be frozen and stored (cryopreserved). The sperm can be stored indefinitely and so can be available even years later so that your wish to have children can still become a reality.


TESE stands for testicular sperm extraction. If no sperm can be detected in the spermiogram (the medical term for this is ‘azoospermia’), then under certain circumstances a biopsy, or small tissue sample, can be taken from the testicles. The reasons for the lack of sperm could be a bilateral blockage of the seminal duct (called ‘vas deferens’ in medical language). This problem could be congenital or as a result of an infection. Other possible causes could be an undescended testicle in childhood, or if the man has been previously sterilised. The TESE procedure takes place after an evaluation has been carried out by an andrologist.