In a May 2014, PubMed report Ovarian tissue cryopreservation: a committee opinion. explains one option in reproductive preservation to help women planning to have children at some point in life after their chemotherapy treatments are discontinued.
Women are born with a certain number of eggs and everything women are exposed to, they are exposing their eggs to. Today research is finally proving that children with health issues parents did not have are the result of different things a mother is exposed to prior and during pregnancy, especially with chemotherapies.
Any woman who thinks she might have her own children should consider freezing her eggs before any chemotherapy treatment is considered. Any parent who is allowing their under age child to have chemotherapy should do the same.