Lentigo Maligna Melanoma arises from a pre-existing lentigo, rather than a mole, and accounts for approximately 5% of all melanoma cases. This type of melanoma typically takes many years to develop. It occurs most often in older adults, usually on the face and other chronically sun-exposed areas. These melanomas are generally large, flat, tan-colored lesions containing differing shades of brown, or as in other melanomas, black, blue, red, gray, or white.
