Mohs surgery is a microscopically-controlled surgery where thin layers of skin cancer tissue are removed until the surgeon reaches clear tissue.
“You’re able to remove a very conservative margin around the cancer and study it in essentially real-time,” explains Dr. Sumaira Aasi, Professor of Dermatology and Director of Mohs and Dermatologic Surgery at Stanford. If, when the surgeon examines the tissue under the microscope, cancer is found, the surgeon goes back and removes some more tissue.
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The idea is that by making the tiniest cuts and evaluating them microscopically, the surgeon knows for certain that all the cancer is out when the last piece of tissue proves to be clear. It is often done as an outpatient procedure with local anesthetic.
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