Cancer therapy and reproductive impact.

All patients where the cancer treatment has gonadotoxic potential should be referred for oncofertility advice. The effect of chemotherapy and radiotherapy on the human ovary can vary from no impact to full-blown premature ovarian failure due to hormonal and follicular depletion. Total contraindications to fertility cryopreservation include acute malignancy that requires immediate lifesaving therapy. In prepubertal girls, the only option for urgent fertility preservation is ovarian tissue cryopreservation. Prepubertal testicular tissue cryopreservation is experimental.