naevus
n. birthmark, mole, nevus (Medicine) | ||||
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Naevi definition was found in categories: Language, Idioms & Slang(1) Arts & Humanities(1) Encyclopedia(1)
Naevi Definition from Language, Idioms & Slang Dictionaries & Glossaries
| Webster's Revised Unabridged Dictionary (1913) |
Naevi
(pl. )
of Navus
(pl. )
of Navus
Naevi Definition from Arts & Humanities Dictionaries & Glossaries
| JM Latin-English Dictionary |
naevus
N M
mole (on the body); birthmark
N M
mole (on the body); birthmark
Naevi Definition from Encyclopedia Dictionaries & Glossaries
| Wikipedia English - The Free Encyclopedia |
Nevus
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.
- 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.
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