Lentigo Maligna Melanoma
by Steve Gschmeissner/science Photo Library
Title
Lentigo Maligna Melanoma
Artist
Steve Gschmeissner/science Photo Library
Medium
Photograph - Photograph
Description
Lentigo maligna melanoma. Light micrograph (LM). Lentigo maligna melanoma (LMM) is diagnosed when the melanoma cells have invaded into the dermis and deeper layers of skin. Lentigo maligna has a lower rate of transformation to invasive melanoma than the other forms of melanoma in situ (under 5% overall). However, the risk of invasive melanoma is greater in larger lesions, with up to 50% of those with diameter of greater than 4 cm being reported to have an invasive focus. Follicular involvement of lentigo maligna, (seen here) is considered a histopathologic hallmark. LMM occurs in sun damaged skin so is generally found on the face or neck, particularly the nose and cheek. Magnification: x 60 when printed at 10 centimetres high.
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May 11th, 2022
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