Basal cell carcinoma (BCC) is the most commonly diagnosed form of skin cancer in the United States. It usually appears as a small, fleshy bump on sun-exposed areas such as the face or neck and can be reddish-brown or pearly white in color. If left untreated, BCC can grow large enough to cause scarring or disfigurement. Fortunately, it rarely spreads beyond its original location if treated early enough with surgery or topical medications like imiquimod cream or fluorouracil cream.
Cited from the Mayo Clinic & the American Academy of Dermatology