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Combined Blue Nevi

Arch Dermatol. 2004;140:902.

	Since this article does not have an abstract, we have provided the first 150 words of the full text and any section headings.

The lesions shown are from the cheek of an 18-year-old white man (Figure 1), and the cheek of an 8-year-old white child (Figure 2) (size bar, 5 mm). Both the lesions reveal a relatively similar pattern. Coloration is clearly two-tone with a brown overlying component and an underlying blue component. In the lesions shown, the brown and bluecomponents appear to have similar dimensions. Theoretically, combined blue nevi may result from a clone of cells that migrate and differentiate along 2 different pathways. Another possibility could include a field effect resulting in a secondary melanocytic proliferation in response to factors secreted from the primary population.

Figure appears in full text version. Figure 1.

Figure appears in full text version. Figure 2.

Editor's Note: The skINsight section is a forum for the presentation of dermatologic images. The current effort is to foster the recognition of patterns in dermatologic disease processes that may enhance both diagnostic and research capabilities. The initial . . . [Full Text of this Article]