Nevus
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(Redirected from Naevus)
| ICD-9 | 216.0-216.9 |
|---|
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 fall into the category of nevi.
- melanocytic nevus: Nevus cells (melanocytes) are normally localized in the basal layer of the epidermis. Their proliferation may appear in:
- the epidermis (junctional nevus),
- in the epidermis and dermis (compound nevus),
- or only in the dermis (intradermal nevus). Intradermal melanocytic nevus — a benign tumor in which the tumor cells form nests in the dermis, 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).
- dysplastic nevus
- blue nevus
- Blue Rubber Bleb Nevus Syndrome
- nevus flammeus (port-wine stain)
[edit] External links
- Atlas of Pathology Section of a melanocytic nevus
- Nevus Outreaches:Nevus
