Nevus

Nevus
Photograph of a nevus on an arm

WikiDoc Resources for Nevus
Articles
Most recent articles on Nevus Most cited articles on Nevus Review articles on Nevus Articles on Nevus in N Eng J Med, Lancet, BMJ
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Evidence Based Medicine
Cochrane Collaboration on Nevus Bandolier on Nevus TRIP on Nevus
Clinical Trials
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Guidelines / Policies / Govt
US National Guidelines Clearinghouse on Nevus NICE Guidance on Nevus NHS PRODIGY Guidance FDA on Nevus CDC on Nevus
Books
Books on Nevus
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Commentary
Blogs on Nevus
Definitions
Definitions of Nevus
Patient Resources / Community
Patient resources on Nevus Discussion groups on Nevus Patient Handouts on Nevus Directions to Hospitals Treating Nevus Risk calculators and risk factors for Nevus
Healthcare Provider Resources
Symptoms of Nevus Causes & Risk Factors for Nevus Diagnostic studies for Nevus Treatment of Nevus
Continuing Medical Education (CME)
CME Programs on Nevus
International
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Business
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Experimental / Informatics
List of terms related to Nevus

Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]

Synonyms and keywords: Naevus

Overview

Nevus is a general term that refers to a number of different (usually benign) pigmented lesions of the skin. Most birthmarks and moles are placed into the category of nevi.

Classification

• Melanocytic nevus: Nevus cells are normally localized in the basal layer of the epidermis. Their proliferation may appear in the form of a:
  • Junctional nevus: located just superficial to the junction of the epithelium and the underlying connective tissue. A junctional nevus is flat and is not detected by palpation.
  • Compound nevus: located within the interface of the epithelium and the underlying connective tissue. A compound nevus is raised and solid.
  • Intradermal nevus: The most common lesion of the skin, these lie exclusively within the dermis. They are regular and round, their cells having a central nucleus and single nucleolus. Some melanocytes may present melanin pigment in the cytoplasm (dark-brown, granular).
  • Intramucosal nevus: Although all oral nevi are rare, intramucosal nevi are the most commonly seen there, as they are found most frequently on the hard palate.
  • Spider angioma, also known as nevus araneus
• Dysplastic nevus
• Blue nevus
• Blue Rubber Bleb Nevus Syndrome
• Nevus flammeus(port-wine stain)
• Giant Hairy Nevus: These large pigmented (often hairy) congenital nevi are important because of their increased risk (10 to 15%) of conversion into malignant melanoma.

References

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