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Blue nevi may be divided into the following types: [7]: 701 A patch blue nevus (also known as an "acquired dermal melanocytosis", and "dermal melanocyte hamartoma") is a cutaneous condition characterized by a diffusely gray-blue area that may have superimposed darker macules.
A Mongolian spot, also known as slate grey nevus or congenital dermal melanocytosis, is a benign, flat, congenital birthmark with wavy borders and an irregular shape. In 1883, it was described and named after Mongolians by Erwin Bälz, a German anthropologist based in Japan, who erroneously believed it to be most prevalent among his Mongolian patients.
Blue nevus: It is blue in color as its melanocytes are very deep in the skin. Characteristic pigmented melanocytes between bundles of collagen. H&E stain. Spitz nevus: A distinct variant of intradermal nevus, usually in a child. They are raised and reddish (non-pigmented). Characteristic vertically arranged nests of cells ("hanging bananas"). H ...
Acral nevus (melanocytic nevus of acral skin, melanocytic nevus with intraepidermal ascent of cells) Amelanotic blue nevus (hypomelanotic blue nevus) Becker's nevus; Balloon cell nevus; Bannayan–Riley–Ruvalcaba syndrome; Becker's nevus (Becker's melanosis, Becker's pigmentary hamartoma, nevoid melanosis, pigmented hairy epidermal nevus)
Nevus (pl.: nevi) is a nonspecific medical term for a visible, circumscribed, chronic lesion of the skin or mucosa. [1] The term originates from nævus , which is Latin for " birthmark "; however, a nevus can be either congenital (present at birth) or acquired.
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Becker's nevus typically presents as a unilateral, non-cancerous patch of skin that is hyperpigmented and has excessive hair, often occurring on the chest, shoulder, and back. [4] The term " Becker's nevus syndrome " is used to describe Becker's nevus occurring along with other skin, musculoskeletal, or other tissue abnormalities such as ...