definition
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)
synonyms
Amelanotic Malignant Melanoma (AMM), Melanoma, Amelanotic
UMLS
Amelanotic melanoma, Amelanotic Melanomas, Melanoma, Amelanotic, Melanomas, Amelanotic