Dysplastic nevi are precursors of malignant melanoma that are:
A) Larger than other nevi
B) Oval epidermal nests
C) Dermal cords of cells
D) Brown, rounded papules
Ans: A
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Dysplastic nevi, a precursor of malignant melanoma, are larger than other nevi (often >5 mm in diameter), have a flat, slightly raised plaque and pebbly surface, or a target-like lesion with a darker, raised center and irregular border. Nevocellular nevi are tan to deep brown, uniformly pigmented, small papules with well-defined and rounded borders that grow in nests or clusters along the dermal–epidermal junction. Eventually, most junctional nevi grow into the surrounding dermis as nests or cords of cells.
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