Home › Dermpedia textbook › Melanocytic proliferations › Dendritic melanocyte hamartomas

Mongolian spot

    Editor: unassigned
    Article Contributors: 
    Sean Klepper M.D.
    Stephen Lyle, M.D., ...

    Clinical Features:

    • Pigmented macule, present at birth
    • Usually in the lumbosacral area
    • Most common in darker skinned races
    • Most spontaneously regress by age 3 or 4

    Histologic Features:

    • Widely spaced dendritic melanocytes between collagen bundles in the lower reticular dermis
    • The collagen is unaltered, in contrast to blue nevus, in which the dermis is fibrotic.
    External Links:
    Differential Diagnosis (also link to): 

    Cases associated with this book:

  • Mongolian spot
    Author: Stephen Lyle, M.D., Ph.D.

    Conference: Dr. Z's Consultations