👉 Papillomas, also known as basal cell carcinomas, are benign skin tumors. These cells form a loose network of ducts and can grow into the underlying skin layers. They often appear on the face, neck, or other areas where there is a high risk for exposure to ultraviolet (UV) radiation. Papillomas can be harmless if they don't spread outside the skin, but they can become cancerous if they are not removed promptly.