| Clinical Information | ||
| A 69-year-old woman presented with a 0.5-cm flat,pigmented skin lesion on the right dorsal forearm that has been present for many years. There were no other skin lesions or any evidence of neurofibromatosis. | ||
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| Low magnification, dermal spindle cell lesion. | Higher magnification. | |
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| Melan-A : Positive | S-100 protein: Positive. | |