Sections View Full Chapter Figures Tables Videos Annotate Full Chapter Figures Tables Videos Supplementary Content + Download Section PDF Listen ++ For further information, see CMDT Part 6-07: Seborrheic Keratoses + Key Features Download Section PDF Listen +++ ++ Seborrheic keratoses are common, especially in the elderly and may be mistaken for melanomas or other types of cutaneous neoplasms + Clinical Findings Download Section PDF Listen +++ ++ Seborrheic keratoses are benign plaques, beige to brown or even black, 3–20 mm in diameter, with a velvety or warty surface They appear to be stuck or pasted onto the skin + Diagnosis Download Section PDF Listen +++ ++ Clinical + Treatment Download Section PDF Listen +++ ++ No treatment is needed They may be frozen with liquid nitrogen or curetted if they itch or are inflamed but usually recur after treatment