Image and content excerpted from the VisualDx clinical decision support system.
VisualDx images show variation in age, skin color, and disease stage. VisualDx has 38 images of Nevus, Blue.
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216.9 – Benign neoplasm of skin site unspecified
D22.9 – Melanocytic nevi, unspecified
The blue nevus, also known as an acquired nevus, is a developmental lesion caused by aggregates of dendritic melanocytes that lie in the deep mucosa. The depth of the pigment creates a "Tyndall effect," which is what makes the melanin pigment appear blue. Although the literature reveals a 2:1 female predilection, this may be related to female patients seeking care more often and having more cosmetic concerns than male patients. It represents approximately 1/5 to 1/4 of all intraoral melanocytic nevi. Most nevi are noticed in the 2nd to 4th decade of life and are usually asymptomatic.