Measures used to preserve fertility

  • Freezing / vitrification of eggs. This consists of extracting, freezing and storing the eggs; it is not always possible in all cancer treatments. In all cases, the patient has to take treatment to induce ovulation.
  • Freezing of embryos. The extracted eggs are fertilised with donor semen or semen from the partner, and the embryos obtained are frozen and stored. The patient has to take treatment to induce ovulation.
  • Freezing of ovarian tissue. Used when stimulation of the ovaries is not recommended or when there is insufficient time before the cancer treatment. This procedure is carried out laparoscopically and is currently in an investigational phase.
  • Treatments with GH-RH analogues. They reduce the negative impact of the cancer treatment on the gonad (the organ where the gametes are formed, i.e. the ovaries).