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Medical Definition of Dysplastic nevus

Dysplastic nevus: An atypical mole whose appearance is different from that of a common ordinary mole. Dysplastic nevi tend to be larger than ordinary moles, have more irregular borders, are often mixed in color and present in large numbers. A dysplastic nevus may be a marker for a person at risk for melanoma, especially if there is a family history of melanoma .

Source: MedTerms™ Medical Dictionary
https://www.medicinenet.com/script/main/art.asp?articlekey=25170
Last Editorial Review: 9/14/2016

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