Canadian Medical Guide > Diseases > Neoplasms > Neoplasms by Histologic Type > Nevi and Melanomas > Nevus > Nevus, Pigmented Terms and Definitions




Nevus, Pigmented

Medical Definition: A nevus containing melanin. The term is usually restricted to nevocytic nevi (round or oval collections of melanin-containing nevus cells occurring at the dermoepidermal junction of the skin or in the dermis proper) or moles, but may be applied to other pigmented nevi. (From Dorland, 27th ed)
Guide Notes: /blood supply /chem /secret /ultrastruct permitted; coord IM with SKIN NEOPLASMS (IM) + site (IM or NIM) if relevant
Nevus, Pigmented Categories.
Canadian Medical Guide Definition Nevus of Ota - A macular lesion on the side of the face, involving the conjunctiva and lids, as well as the adjacent facial skin, sclera, ocular muscles, and periosteum. Histological features vary from those of a mongolian spot to those of a blue nevus.
Canadian Medical Guide Definition Nevus, Spindle Cell - A form of pigmented nevus showing intense melanocytic activity around the dermo-epidermal junction. Large numbers of spindle-shaped melanocytes proliferate downward toward the dermis and usually a large amount of pigment is present. It was first described in 1976 and the bulk of patients reported have been young females with the lesions presenting on the thighs. (From Rook et al., Textbook of Dermatology, 4th ed, 1992, p185)

Nevus, Pigmented Medical Definitions and Terms

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