Papillomatosis is skin surface elevation caused by hyperplasia and enlargement of dermal papillae.Kumar, Vinay; Fausto, Nelso; Abbas, Abul (2004) Robbins & Cotran Pathologic Basis of Disease (7th ed.). Saunders. Page 1230. . These papillary projections of the epidermis form an undulating surface under microscopic examination.
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