Convenient, portable disk set (4" diameter) is ideal for showing the differences among skin lesions, including those that are cancerous. The front of each disk contains visual representations (6 mm and enlarged) of one of five skin lesions (dysplastic nevus, actinic keratosis, malignant melanoma, squamous cell carcinoma, and basal cell carcinoma). The back of each disk contains additional information about each lesion.