Disorders affecting the maturation of the epidermis are regarded as incidental findings in normal skin and otherwise unrelated benign lesions. These include epider-molytic hyperkeratosis, focal acantholytic dyskeratosis, and pagetoid dyskeratosis. The former two entities also occur as primary pathologic lesions. We report a hyper-keratotic lesion with a specific histologic pattern consisting of dyskeratotic cells throughout the epidermis and a parakeratotic horn, with large, rounded cells at all levels of the stratum corneum. Because we believe it to be a variant of the solitary, acquired lesions characterized by abnormal epidermal maturation, such as epidermolytic acanthomas, we suggest the term "dyskeratotic acanthoma" for this lesion.
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