What is cryosurgery?
Cryosurgery is the use of extremely cold temperatures to freeze and destroy abnormal tissues. This procedure is used to treat pre-cancerous tumors, and to control bleeding. It often is used to remove abnormal tissue of the cervix, the lower part of the uterus (womb) that opens into the vagina (birth canal).
How is cryosurgery done?
The cold is introduced through a probe, which has liquid nitrogen circulating through it. To destroy diseased tissue, the tissue is cooled to below -20 degrees Celsius. Other procedures that control pain or bleeding are cooled to a lesser degree to prevent tissue damage.