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Walk the Even Hospital Database by book and chapter — the raw source passages that ground Ask, DDx, and the rest.

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©2013 UpToDate ® Print Email Bowen's disease/squamous cell carcinoma in situ A well-demarcated, erythematous, scaling plaque that can resemble eczema, psoriasis, or superficial basal cell carcinoma. Courtesy of Clara Curiel, MD.