To increase the likelihood of complete tumor removal, remove a margin of normal-appearing skin in order to remove all clinically invisible tumor extension. The larger the amount of clinically normal-appearing skin removed, the higher the cure rate. However, more extensive removal leaves a larger surgical defect and a poorer cosmetic result in most cases. The tumor is removed and processed to allow for localization of any tumor that might persist. Mohs micrographic surgery is time consuming, and patients might require additional anesthesia before each stage.
Liquid nitrogen is applied to the clinically apparent tumor.
A temperature probe is inserted into the skin at a lateral margin. Treatment stops when the temperature at the lateral margins reaches -60 Celsius. It is a good option for nonsurgical candidates. Cryosurgery is operator dependent. Ionizing radiation is good treatment for nonsurgical candidates with facial tumors.