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