Atypical Nevi

AKA dysplastic nevi


Usually

• >0.5cm diameter
• Irregular border
• Shades of pink & brown
• Always have a macular component

Not present at birth

Prevalence 5%

Increased risk of melanoma

Several or many lesions
=> ?Atypical Nevus Syndrome
=> Accounts for 5% of melanomas in US
Consider the familial syndrome
=> >50 dysplastic nevi; FHx of melanoma, esp. 1st or 2nd degree relative
Subtle histological differences for non- versus familial

Mx for multiple dysplastic nevi should include

• Total cutaneous survey at least every 12/12
• Screen family members
• Educate re self-examination
• Excise suspicious lesions