MMS is a form of surgery that is performed in stages over several hours. The surgeon functions as a pathologist and extirpates the tumour and immediately evaluates the extirpated tissue, which is processed under frozen section. Before closure, the positive margins are removed in subsequent stages and final closure is performed once the tumour is declared fully removed by the attendant histopathologist. MMS is thought to be a highly curative procedure for non-melanoma skin cancers since immediate histopathological evaluation permits further tumour extirpation in successive stages. Although more tumour is removed from the positive margins in these stages, the remaining tissue is spared since only the tumour is removed, limiting potential damage to adjacent tissues.
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Complete Guide to Preventing Skin Cancer. We all know enough to fear the name, just as we do the words tumor and malignant. But apart from that, most of us know very little at all about cancer, especially skin cancer in itself. If I were to ask you to tell me about skin cancer right now, what would you say? Apart from the fact that its a cancer on the skin, that is.