IVF can be used for cancer patients in a few ways. For some cancer patients, IVF can help preserve fertility before treatment. In this case, the patient would have their eggs or sperm harvested and frozen for later use. For women who have had their uterus removed due to cancer, IVF can be used to achieve pregnancy with a surrogate mother carrying the child. Finally, IVF may be used to treat infertility caused by cancer treatment, such as chemotherapy or radiation.