Nevus: Difference between revisions
Jump to navigation
Jump to search
No edit summary |
No edit summary |
||
| Line 4: | Line 4: | ||
Image = Nevus.jpg | | Image = Nevus.jpg | | ||
Caption = Photograph of a nevus on an arm | | Caption = Photograph of a nevus on an arm | | ||
}} | }} | ||
{{SI}} | {{SI}} | ||
| Line 41: | Line 33: | ||
[[Category:Oral pathology]] | [[Category:Oral pathology]] | ||
[[Category:Oncology]] | [[Category:Oncology]] | ||
[[category:primary care]] | |||
[[de:Nävus]] | [[de:Nävus]] | ||
Revision as of 21:03, 20 February 2013
| Nevus | |
 | |
|---|---|
| Photograph of a nevus on an arm |
|
WikiDoc Resources for Nevus |
|
Articles |
|---|
|
Media |
|
Evidence Based Medicine |
|
Clinical Trials |
|
Ongoing Trials on Nevus at Clinical Trials.gov Clinical Trials on Nevus at Google
|
|
Guidelines / Policies / Govt |
|
US National Guidelines Clearinghouse on Nevus
|
|
Books |
|
News |
|
Commentary |
|
Definitions |
|
Patient Resources / Community |
|
Directions to Hospitals Treating Nevus Risk calculators and risk factors for Nevus
|
|
Healthcare Provider Resources |
|
Continuing Medical Education (CME) |
|
International |
|
|
|
Business |
|
Experimental / Informatics |
Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]
Overview
Nevus (or naevus) 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.