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Walk the evidence base by book and chapter — the raw source passages that ground Ask, Differential, and the rest.

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contentuptodate· Content· item f22_20_22850

©2013 UpToDate ® Print Email Actinic keratosis A scaly, flat lesion is present on the lower eyelid (arrow). With permission from Slomovits, TL (Ed), Basic and clinical science courses section, American Academy of Ophthalmology, San Francisco 1996.