WebMD has an image slide show depicting precancerous skin lesions and skin cancer conditions. Information about various types of skin cancers and methods of recognizing them accompanies these pictures.
The WebMD slide show includes well-known skin cancers such as melanoma, squamous cell carcinoma and basal cell carcinoma. It depicts lesser-known types, as well, including Kaposi's sarcoma, sebaceous gland carcinoma and Merkel cell carcinoma. The slides also cover precancerous skin lesions such as actinic keratosis and actinic cheilitis. Additionally there is advice on what irregularities to watch for when conducting skin self-examinations, which assists in identifying atypical moles that need to be checked by a dermatologist.