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skos:definition |
MSH: An unpigmented malignant melanoma. It is an anaplastic melanoma consisting of cells derived from melanoblasts but not forming melanin. (Dorland, 27th ed; Stedman, 25th ed),NCI: A type of skin cancer in which the cells do not make melanin. Skin lesions are often irregular and may be pink, red, or have light brown, tan, or gray at the edges.,NCI: A malignant neoplasm composed of melanocytes, which lack melanin.,NCI: A melanoma characterized by the complete absence of melanin pigment in the melanoma cells. It occurs more frequently on the face and it is often associated with desmoplastic reaction.
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