Ovarian Tissue Cryopreservation

Inclusion Criteria:

* Newly diagnosed or relapsed malignancy with proposed treatment regimen containing at least ONE (1) of the following:

whole abdomen or pelvic irradiation

total body irradiation

Proposed treatment regimen to include any of the following:

cyclophosphamide equivalent dose (CED, see Green et al 2014) ≥7.5 g/m2

any treatment regimen containing procarbazine

bone marrow transplant conditioning regimen containing alkylators

OR health condition or malignancy that requires removal of one or both ovaries. Health status adequate to undergo elective laparoscopic surgery (as per anesthesiologist assessment)

Exclusion Criteria:

* Pregnancy or a patient who is currently breastfeeding

Patients who are eligible for and agree to oocyte preservation

Anyone deemed high risk for complications from the surgery and/or anesthesia.

Anyone unable to provide consent due to psychiatric conditions or cognitive delay (in parent/guardian for patients \<18 years, and patient \>18 years)