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==Classification== | ==Classification== | ||
* [[mole (skin marking)|Melanocytic nevus]]: Nevus cells are normally localized in the basal layer of the [[Epidermis (skin)|epidermis]]. Their proliferation may appear in the form of a: | * [[mole (skin marking)|Melanocytic nevus]]: Nevus cells are normally localized in the basal layer of the [[Epidermis (skin)|epidermis]]. Their proliferation may appear in the form of a: | ||
** Junctional nevus: | ** 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: | ** 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 [[Cell nucleus|nucleus]] and single [[nucleolus]]. Some melanocytes may present [[melanin]] pigment in the cytoplasm (dark-brown, granular). | ** 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 [[Cell nucleus|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. | ** 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 | ** [[Spider angioma]], also known as nevus araneus | ||
* [[Dysplastic nevus]] | * [[Dysplastic nevus]] | ||
* [[Blue nevus]] | * [[Blue nevus]] | ||
* [[Blue Rubber Bleb Nevus Syndrome]] | * [[Blue Rubber Bleb Nevus Syndrome]] | ||
* Nevus flammeus([[port-wine stain]]) | * 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. | * 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. | ||
Revision as of 15:02, 13 June 2013
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WikiDoc Resources for Nevus |
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Evidence Based Medicine |
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Clinical Trials |
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Ongoing Trials on Nevus at Clinical Trials.gov Clinical Trials on Nevus at Google
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Guidelines / Policies / Govt |
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US National Guidelines Clearinghouse on Nevus
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Books |
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News |
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Commentary |
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Definitions |
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Patient Resources / Community |
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Directions to Hospitals Treating Nevus Risk calculators and risk factors for Nevus
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Healthcare Provider Resources |
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Continuing Medical Education (CME) |
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International |
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Business |
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Experimental / Informatics |
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.