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skINsight
August 2004

Dermoscopy of Melanocytic NeoplasmsBlue Nevi

Author Affiliations
 

JAMES M.GRICHNIKMD, PhD

Arch Dermatol. 2004;140(8):1028. doi:10.1001/archderm.140.8.1028

The lesions shown are from the right posterior upper arm of a 65-year-old black woman (Figure 1), the abdomen of a 41-year-old white man (Figure 2), and the dorsal forearm of an 81-year-old white woman (Figure 3) (size bar, 5 mm). All these lesions reveal a relatively similar pattern. Coloration is uniform, dense, and blue. This pattern is common in blue nevi. Theoretically, this pattern could be caused by a clone of melanocytes that aberrantly proliferates and differentiates into heavily pigment-producing melanocytes in the dermis without significant epidermal involvement.

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