Cryosurgery uses very cold nitrogen or argon gas to freeze off abnormal tissue. It can treat some early skin cancers, retinoblastoma, and precancerous spots on your skin or cervix.
Photodynamic therapy is a laparoscopic surgery that puts drugs near tumors. Light activates the medicine, and it kills cancer cells.
Laser surgery uses strong beams of light to cut into your skin. It’s good for very tiny areas. Lasers can also sometimes shrink tumors.