Basal cell carcinoma is the most common type of skin cancer. It usually appears on sun-exposed areas as a blemish that won't heal or a persistent, pearly, shiny bump. The area may bleed with minor trauma. There are several other presentations including one that appears like a red, rough patch.quamous cell carcinoma can occasionally spread into the lymph nodes and internal organs. This occurs more often with large, aggressive squamous cell carcinomas or rapidly-growing tumors on the ears, scalp, lips or genitalia.