Tip 182: slate-grey naevus

These are blue or slate-grey macular lesions (previously called a Mongolian blue spot) with variably defined edges, seen most commonly over the pre-sacral area.

They may be solitary or numerous and can involve large areas.

More than 80% of Afro-Caribbean and Asian infants have them compared with <10% of Caucasian infants. Malignant degeneration does not occur.

Reference: Kleigman, R. M., Behrman, R. E., Jenson, H. B., Stanton, B. F. (2007). Nelson Textbook of Pediatrics. 18th Ed. Elsevier/Saunders.

Previously published: 23/10/14

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