Canadian Medical Guide > Diseases > Neoplasms > Neoplasms by Histologic Type > Nevi and Melanomas > Nevus > Nevus, Blue Terms and Definitions

Nevus, Blue

Medical Definition:	Usually a benign tumor, that commonly presents as a solitary blue nodule with spindled melanocytes covered by smooth skin. Several variants have been identified, one variant being malignant. The blue color is caused by large, densely packed melanocytes deep in the dermis of the nevus. In children, they usually occur on the buttocks and lumbar area. Malignant blue nevi are more commonly found on the scalp.
Guide Notes:	coord IM with SKIN NEOPLASMS (IM) + site (IM or NIM) if relevant
Previously Indexed:	Nevus (1966-1993),Nevus, Pigmented (1967-1993)

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