The most common form of nonmelanoma skin cancer in the United States is Basal Cell carcinoma (BCCa). Basal carcinoma is considered slow-growing and almost never metastasizes (spreads) or travels to the bloodstream. Instead, BCCa infiltrates the surrounding tissue and continues to destroy the tissue until removed. Generally, BCCa are found on areas of the body that receive the most sun exposure or other form of UV radiation - scalp, face, ears, chest, back, arms, and legs.