Cryosurgery
（重定向自Cryocautery）
Cryosurgery (cryotherapy) is the use of extreme cold in surgery to destroy abnormal or diseased tissue. The term comes from the Greek words cryo (κρύο) ("icy cold") and surgery (cheirourgiki – χειρουργική) meaning "hand work" or "handiwork". Cryosurgery has been historically used to treat a number of diseases and disorders, especially a variety of benign and malignant skin conditions.