6. Dysplastic Nevi (Atypical Moles)
Atypical moles are not cancer, but they can become cancer. They can be found in sun-exposed or sun-protected areas of the body. Atypical moles may be larger (one-quarter inch across or larger) and more irregular in shape, with notched or fading borders. They may be flat or raised or the surface smooth or rough. They are typically of mixed color, including pink, red, tan, and brown.