Cryosurgery - local freezing with liquid nitrogen for the controlled destruction of unwanted living tissue - is a simple, useful and cost-effective modality of treatment for both benign and malignant skin lesions. Unfortunately, if used without the correct training or adequate knowledge of the clinical principles involved, it can produce poor results and serious problems. The third edition of this extensively illustrated handbook sets out all the necessary basic information for the efficient and effective running of a cryosurgery clinic.