While the histological epidermal criteria (psoriasiform acanthosis, pale-appearing keratinocytes, parakeratosis, and neutrophilic exocytosis) of clear cell acanthoma (CCA) are usually well known,1 the dermal ones have been less investigated. We attempted to evaluate the frequency of vascular and eccrine findings in CCA and to correlate them with dermoscopy (Fig 1 and Supplemental Fig 1 [available at http://www.jaad.org]).
