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
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Commentary
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Definitions
Definitions of Nevus
Patient Resources / Community
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Healthcare Provider Resources
Symptoms of Nevus Causes & Risk Factors for Nevus Diagnostic studies for Nevus Treatment of Nevus
Continuing Medical Education (CME)
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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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