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Skin - Nonmelanocytic tumors

Benign nonmelanotic epidermal tumors / tumor-like lesions

Verrucous hyperplasia


Reviewer: Christopher Hale, M.D. (see Reviewers page)
Revised: 25 June 2012, last major update June 2012
Copyright: (c) 2001-2012, PathologyOutlines.com, Inc.

General
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● Papillomatosis associated with hyperkeratosis
● Benign
● Nonspecific change, associated with various entities

Epidermal nevus:
● 1- 3 per 1000 live births, males = females
● Hamartomatous collection of epidermal cells
● May present with extracutaneous abnormalities as one of the epidermal nevus syndromes
● Non-organoid type: keratinocytes only

Organoid type:
● Adnexal differentiation
● If present since birth or early childhood, have higher risk for basal cell carcinoma and adnexal tumors

Case reports
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● 5 year old Mexican girl with systematized epidermal nevus (Am J Med Genet A 2008;146A:2275)

End of Skin - Nonmelanocytic tumors > Benign nonmelanotic epidermal tumors / tumor-like lesions > Verrucous hyperplasia


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