Option | Technique | Suitable Situation |
Oocyte cryopreservation | Usually requires ovarian stimulation and oocyte collection | ・ When enough time is available before cancer treatment of unmarried women/adolescent girls for extraction of oocytes ・ Cancer is not aggravated by stimulation hormones |
Embryo cryopreservation | Ovarian stimulation and IVF | ・ Women with male partner or using donor sperm ・ When enough time is available before Cancer treatment ・ Cancer is not aggravated by stimulation hormones |
Ovarian tissue cryopreservation | Surgical removal of ovarian tissue | ・ Urgent cancer therapy is required ・ Prepubertal girls ・ Hormone sensitive cancers |
Whole ovary cryopreservation | Surgical removal of the whole ovary | ・ Same as mentioned for ovarian tissue cryopreservation |
Combination of ovarian tissue and oocyte/embryo cryopreservation | Surgery followed by ovarian stimulation and IVF/oocyte freezing | ・ Urgent cancer therapy is required ・ Cancer is not aggravated by stimulation hormones |