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Medical Definition of Hutchinson's melanotic freckle
1. A cutaneous malignant melanoma found most often on the sun-exposed areas of the skin, especially the face, which begins as a circumscribed, macular patch of mottled pigmentation, showing shades of dark brown, tan, or black, and enlarges by lateral growth before dermal invasion occurs. This type is the slowest growing, has the least tendency to metastasize, and seems to be the least aggressive form of malignant melanoma. Patients are commonly in their sixth or seventh decade. (12 Dec 1998)