Epidermal nevus

Common Name(s)

Epidermal nevus

Epidermal nevi are congenital lesions that affect about 1 in 1,000 people. They appear at or shortly after birth as localized epidermal thickening with hyperpigmentation that frequently follow the lines of Blaschko, suggesting that they result from postzygotic somatic mutation in the skin ({10:Paller et al., 1994}). A rare subgroup of epidermal nevi is clinically indistinguishable from other epidermal nevi, but displays histopathologic features typical of epidermolytic hyperkeratosis (see EHK, {113800}), and patients with this type of epidermal nevi sometimes have offspring with generalized EHK ({10:Paller et al., 1994}). Woolly hair nevus is a rare condition characterized by the development of woolly hair in a restricted area on the scalp, either present at birth or becoming evident later in life when scalp hair begins to grow. Woolly hair nevus can be an isolated finding or can occur in association with additional ectodermal defects; epidermal nevi have been reported in association with woolly hair nevi (summary by {11:Ramot and Zlotogorski, 2015}). Nevus sebaceous, a benign congenital skin lesion that preferentially affects the scalp and face, is characterized by hairless, yellow-orange plaques of various size and shape. Histology shows that nevus sebaceous is a hamartoma consisting of epidermal, sebaceous, and apocrine elements. About 24% of nevi develop secondary tumors, some of which may be malignant (summary by {2:Groesser et al., 2012}). Also see giant pigmented hairy nevus ({137550}) and malignant melanoma ({155600}).
 

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Condition Specific Organizations

Following organizations serve the condition "Epidermal nevus" for support, advocacy or research.

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Scientific Literature

Articles from the PubMed Database

Research articles describe the outcome of a single study. They are the published results of original research.
The terms "Epidermal nevus" returned 39 free, full-text research articles on human participants. First 3 results:

A Case of Cap Polyposis with Epidermal Nevus in an Infant.
 

Author(s): Soon Chul Kim, Myoung Jae Kang, Yeon Jun Jeong, Pyoung Han Hwang

Journal: J. Korean Med. Sci.. 2017 May;32(5):880-884.

 

Cap polyposis is extremely rare in children. We report a case of an 11-month-old male infant who visited our hospital because of rectal prolapse and small amount of hematochezia lasting several days. He also had an epidermal nevus in the sacral area. Colonoscopy showed erythematous, ...

Last Updated: 5 Apr 2017

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Squamous cell carcinoma arising in a multiple verrucous epidermal nevus.
 

Author(s): Samira Yarak, Taila Yuri Siqueira Machado, Marilia Marufuji Ogawa, Mirian Luzia da Silva Almeida, Milvia Maria Simões E Silva Enokihara, Adriana Maria Porro

Journal: An Bras Dermatol. ;91(5 suppl 1):166-168.

 

Verrucous epidermal nevi are hamartomatous lesions of the epidermis that, unlike other epidermal nevi (such as sebaceous nevus or nevus comedonicus), are rarely associated with malignant neoplasms. The majority of squamous cell carcinoma develop in linear or multiple epidermal nevus ...

Last Updated: 16 Mar 2017

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The Alteration of the Epidermal Basement Membrane Complex of Human Nevus Tissue and Keratinocyte Attachment after High Hydrostatic Pressurization.
 

Author(s): Naoki Morimoto, Chizuru Jinno, Atsushi Mahara, Michiharu Sakamoto, Natsuko Kakudo, Masukazu Inoie, Toshia Fujisato, Shigehiko Suzuki, Kenji Kusumoto, Tetsuji Yamaoka

Journal: Biomed Res Int. 2016 ;2016():1320909.

 

We previously reported that human nevus tissue was inactivated after high hydrostatic pressure (HHP) higher than 200 MPa and that human cultured epidermis (hCE) engrafted on the pressurized nevus at 200 MPa but not at 1000 MPa. In this study, we explore the changes to the epidermal ...

Last Updated: 17 Oct 2016

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Reviews from the PubMed Database

Review articles summarize what is currently known about a disease. They discuss research previously published by others.
The terms "Epidermal nevus" returned 1 free, full-text review articles on human participants. First 3 results:

Oral linear epidermal nevus: a review of the literature and report of two new cases.
 

Author(s): Domenico Tesi, Giuseppe Ficarra

Journal: Head Neck Pathol. 2010 Jun;4(2):139-43.

 

Linear epidermal nevus (LEN) is a sporadic hamartomatous lesion of the skin due to the proliferation of clones of embryonic ectodermal cells, which are arranged according to a typical linear configuration known as Blaschko's lines. Oral involvement of LEN is very rare and few cases ...

Last Updated: 31 May 2010

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