The surgeon cuts the tissue into sections, color codes them with dyes and draws a map of the surgical site. Your wound is bandaged temporarily and you can relax while the lab work begins. The lab analysis, which comes next, will determine that. Some skin cancers may be “the tip of the iceberg,” meaning they have roots or extensions that aren’t visible from the surface. Using a scalpel, the surgeon removes a thin layer of visible cancerous tissue. The surgeon then injects a local anesthesia, which numbs the area completely. If your skin cancer is on your face, that may mean you can’t see what’s happening, but the doctor talks you through it. A surgical drape is placed over the area. The doctor positions you for best access, which may mean sitting up or lying down. The Mohs surgeon examines the spot where you had your biopsy and may mark it with a pen for reference. Step 1: Examination and prepĭepending on the location of your skin cancer, you may be able to wear your street clothes, or you may need to put on a hospital gown. The doctor repeats this process until no cancer cells remain. If any cancer cells remain, the surgeon knows the exact area where they are and removes another layer of tissue from that precise location, while sparing as much healthy tissue as possible. After removing a layer of tissue, the surgeon examines it under a microscope in an on-site lab. The procedure is done in stages, all in one visit, while the patient waits between each stage.
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