Variables in Cryosurgery Technique Associated With Clearance of Actinic Keratosis.

Background: Cryosurgery is the most commonly used method to treat actinic keratosis (AK). Cryosurgical methods are not standardized.

Objective: To examine differences in the spray techniques used for liquid nitrogen cryosurgery when treating AKs of the head, and the effect of these variations in technique on rates of complete clearance of AKs.