Cauterization is the destruction of tissue by burning it. Dr. Prystowsky uses electrocautery to burn off skin cancers and benign growths. Electrocautery can also be used to control bleeding during surgery. Electrocautery is preferred to other types of cautery because it is more efficient. However, if you have a pacemaker, let Dr. P know and she will use thermal cautery instead of electrocautery.