Dermatosis Papulosa Nigra (Castellani) of Unusual Distribution

Diasio, F. A.

doi:10.1001/archderm.1933.01450040760004

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1964

2010

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Cited by 7 publications

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“…Typical histologic features include acanthosis, parakeratosis, and surface invagination of the epidermis, with the basal layer markedly hyperpigmerited compared with adjacent epidermis. Hair follicles appear dilated and hyper- keratotic, and keratin-filled cysts are occasionally found (6). Although DPN can exhibit thick interwoven tracts of epithelial cells, the proliferation of small basal cells, which is prominent in seborrheic keratoses, is not a common feature of DPN (4).…”

Section: Discussionmentioning

confidence: 99%