Squamous cell carcinoma (SCC) is the second most common type of skin cancer.
Basal cell carcinoma (BCC) is the most common type of skin cancer.
Keratoacanthoma (KA) tends to be categorized in the SCC family. Featuring classic volcano-like architecture, the KA seems to lie somewhere between a true SCC and a viral wart.
Melanoma is the third most common type of skin cancer.
Skin cancer can appear anywhere on the skin. The overwhelming majority of cases are the result of excessive exposure to sunlight. Skin cancer is common, especially among adults with light-colored skin.
Greater than 99% of skin cancers fall into one of three classifications: