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A case of subungual amelanotic malignant melanoma: an electron microscopic study of aberrant melanosomes
M Matsuta1, I Segawa, T Akasaka
1Department of Dermatology, Iwate Medical University School of Medicine, Morioka Iwate, Japan.
Journal of Cutaneous Pathology
|August 1, 1990
Abstract:
A 68-year-old woman with amelanotic malignant melanoma (AMM) of her left thumbnail bed was reported. The tumor cells were positive with S-100 protein. Electron microscopic findings revealed the presence of typical melanosomes and a variety of aberrant melanosomes within the tumor cells, obviously different from the results for common malignant melanoma.