Mohs micrographic surgery is a safe and effective treatment for skin cancer. During Mohs surgery, cancerous tissue is removed in small sections. Both the visible tumor and any “roots” extending beneath the surface of the skin are excised. Because it may be necessary to remove many layers of skin to reach these roots, large wounds or scars, often in prominent areas, can be left behind. In many cases, however, reconstructive plastic surgery can be performed to repair the wound and improve the skin’s appearance.