Blue nevus

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Blue nevus
Blue nevus.jpg
Blue nevus. The blue color is due to the brown pigment in dendritic cells deep within the reticular dermis and light scattering (Tyndall effect)
Image courtesy of Professor Peter Anderson DVM PhD and published with permission © PEIR, University of Alabama at Birmingham, Department of Pathology
ICD-O: 8780-8790
DiseasesDB 31098
MeSH D018329

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1];Associate Editor(s)-in-Chief: Kiran Singh, M.D. [2]

Synonyms and keywords: Blue neuronevus; dermal melanocytoma; nevus bleu.


Blue Naevus or Nevus, is a special type of melanotic nevus. It is blue in color as its melanocytes are deeply situated in the skin. The nevus cells are spindle shaped and scattered in deep layers of the dermis. The covering epidermis is normal.

It is usually described as non-cancerous,[1] but can be malignant.[2][3]


Blue nevi may be divided into the following types:[4]:701


Physical Examination




  1. "Blue naevus (nevus). DermNet NZ". Retrieved 2009-02-27.
  2. Blue+Nevi at the US National Library of Medicine Medical Subject Headings (MeSH)
  3. Granter SR, McKee PH, Calonje E, Mihm MC, Busam K (2001). "Melanoma associated with blue nevus and melanoma mimicking cellular blue nevus: a clinicopathologic study of 10 cases on the spectrum of so-called 'malignant blue nevus'". Am. J. Surg. Pathol. 25 (3): 316–23. doi:10.1097/00000478-200103000-00005. PMID 11224601. Unknown parameter |month= ignored (help)
  4. James, William D.; Berger, Timothy G.; et al. (2006). Andrews' Diseases of the Skin: clinical Dermatology. Saunders Elsevier. ISBN 0-7216-2921-0.
  5. 5.0 5.1 5.2 5.3 5.4 5.5 5.6 5.7 "Dermatology Atlas".

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