It is the familial atypical multiple mole and melanoma (FAMMM) syndrome (also known as dysplastic nevus
syndrome), in which family members develop >100 melanocytic nevi, which is far more than the average
number of common nevi (15–20). Lifetime risk for melanoma is high. In fact, close to 100% for
individuals with >100 lesions and more than two family members with melanoma history.
syndrome), in which family members develop >100 melanocytic nevi, which is far more than the average
number of common nevi (15–20). Lifetime risk for melanoma is high. In fact, close to 100% for
individuals with >100 lesions and more than two family members with melanoma history.