Ovarian tissue cryopreservation:

This involves freezing of ovarian tissue that can be placed back in the body after cancer treatment. This procedure has many advantages and is gaining importance as a method of fertility preservation, since it has long-term use. A small portion of the ovary is surgically removed and cryopreserved. This tissue is put back after treatment, into the remaining ovary or in the pelvis if ovary has been removed because of cancer treatment. The tissue starts functioning within 3 - 6 weeks It can be used in

  1. Pre-pubertal girls where eggs cannot be harvested.
  2. Patients who have to go for immediate cancer therapy and don't have time for egg harvesting.
  3. Can be done as an additional procedure even when there is time for egg harvesting.