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Seborrheic keratoses are benign papules and plaques, beige to brown or even black, 3–20 mm in diameter, with a velvety or warty surface (Figure 6–4) (eFigure 6–6). They appear to be stuck or pasted onto the skin. They are extremely common—especially in older adults—and may be mistaken for melanomas or other types of cutaneous neoplasms. No treatment is needed. They may be frozen with liquid nitrogen or curetted if itchy or inflamed but usually recur after treatment.
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Karadag
AS
et al. The status of the seborrheic keratosis. Clin Dermatol. 2018;36:275.
[PubMed: 29566932]
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Wollina
U. Recent advances in managing and understanding seborrheic keratosis. F1000Res. 2019;8:F1000 Faculty Rev-1520.
[PubMed: 31508199]