Nevus
Nevus (from Latin naevus " birthmark " ) is the general name for a circumscribed, benign malformation of the skin or mucosa, increased in normal cells or tissues, reduced or feel a bit uneven.
Overview
Nevi are hamartomas ( atypically differentiated cell clusters ) of the skin or mucous membrane.
The most common of these are the brownish colored nevi of the pigment- forming cells ( pigmented nevi ), which are widely known by colloquial terms such as " mole " or " liver spot ". They represent only a certain subtype of nevi, but each nevus may also be referred to as a " birthmark ".
There are many other, less common types of nevi that do not consist of melanocytes or pigment-producing nevus cells, but from blood vessel cells, connective tissue cells, glandular cells, or other cells, and therefore have a completely different aspect.
Classification
Using the following chart shows how heterogeneous the entire group of lesions is in fact, for the word nevus can be used as an umbrella term.
Nevi of the pigment-forming cells ( pigmented nevi )
Synonyms: melanocytic nevus Melanocytic, Mole, Mole, Mole
- Melanocytic nevi ( "real" melanocytic nevi from normal melanocytes) epidermal nevi ( located in the epidermis) Freckles ( freckles )
- Lentigenes Lentigo simplex ( " liver spots " )
- Solar lentigo ( age spots )
- Mongolian Spot
- Nevus fuscocaeruleus nevus of Ota
- Nevus Ito
- Nevus
- Compound nevus
- Dermal nevus
- Congenital nevus
- Halonävus
- Spitz nevus
- Dysplastic nevus
Nevi of the vessels and hemangiomas
- Nevus flammeus Spider nevus
- Capillary hemangioma
- Cavernous hemangioma
- Senile hemangioma
Other nevi
- Epidermal nevus
- Sebaceous nevus (also called Talgdrüsennävus )
- Nevus lipomatosus
- Sweat
- Haarnävus
- Komedonennävus
- Connective Tissue