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skos:definition |
MSH: A cellular subtype of malignant melanoma. It is a pigmented lesion composed of melanocytes occurring on sun-exposed skin, usually the face and neck. The melanocytes are commonly multinucleated with a "starburst" appearance. It is considered by many to be the in situ phase of lentigo maligna melanoma.,NCI: An atypical proliferation of atypical melanocytes in the dermal-epidermal junction, without infiltration of the papillary or reticular dermis. The melanocytic proliferation is associated with actinic damage and epidermal atrophy. It usually occurs in the sun-exposed skin of elderly people. It is a form of melanoma in situ.
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