Caption

Light micrograph of a section through human skin showing familial malignant melanoma, a genetic or inherited skin cancer, meaning that the risk of melanoma can be passed from generation to generation in a family. Individuals in melanoma-prone families frequently have moles called dysplastic nevi. Dysplastic nevi are large, flat, irregular, asymmetric, variably pigmented moles, that most commonly occur primarily on sun-exposed skin.