Mohs surgery was developed by Dr. Frederic E. Mohs in the early 1930s as a special technique for the removal of skin cancer, and it is now practiced throughout the world at specialized centers. It permits the immediate and complete microscopic examination of the removed cancer tissue, so that all roots and extensions of the cancer can be eliminated. Mohs surgery has the highest reported cure rate of all treatments for skin cancer and minimizes the amount of tissue removed, resulting in smaller scars. Some skin cancers look deceptively small and are far bigger under the skin than they appear on the surface. These cancers may have roots in the skin along the blood vessels, cartilage, or nerves. Mohs surgery is specifically designed to track and remove these roots.