Mohs Micrographic Surgery (Mohs/MMS)

How Mohs Micrographic Surgery (Mohs/MMS) is performed

Mohs micrographic surgery is usually performed under local or regional anesthesia and can be combined with microsurgical reconstruction as needed. A common practice is to remove thin layers of tissue in stages, with each layer immediately undergoing frozen section pathology. The tumor margins are assessed under a microscope, and if residual tumor is still seen, directional resection is continued according to the positioning map until the margins are negative. Subsequently, direct suture, flap, or skin graft repair is performed depending on the defect. Early postoperative monitoring of bleeding, infection, and wound blood supply is performed, with the goal of removing the lesion while preserving as much healthy tissue as possible. The above is general health information and not medical advice; the specific plan is subject to specialist evaluation and hospital protocols.