For cryotherapy to be effective, the lesion needs to be completely covered by the metal probe, so size is an issue. Location is also important, because freezing is not as successful if the lesion extends high into the cervical canal. Laser vaporization is used in cases when the lesion is too large, extends into the canal or involves the deep glands of the cervix. Recovery time also varies with the different techniques. With cryotherapy, there is mild cramping during the procedure and vaginal discharge for up to four weeks afterward.
Laser vaporization causes cramping, and a local anesthetic is generally used.
Vaginal discharge is briefer following a laser treatment, lasting only five to ten days on average. LEEP is comparable to the laser vaporization, both in terms of discomfort during the procedure and the discharge following. As the cervix heals, the abnormal cells are replaced by healthy new cells. Normally, it's located on the outside of the cervix, where it's easy to see during colposcopy. With laser vaporization, the junction usually returns to the outside, making follow-up examination easier.