Basal Cell Carcinoma - This is the most common form of skin cancer. It is locally invasive and rarely metastasizes. The main problem tends to be local recurrence in difficult to excise areas like the nose, ear and periorbital areas. Basal cell carcinomas which do metastasize have generally been neglected or have suffered multiple recurrences. Median survival in these cases is less than 1 year. Types include nodular, pigmented, morpheaform, squamous metaplasia with keratinization, and ulcerative. Treatment is surgical excision with pathologically free margins. Mohs surgery has the lowest recurrence rate. Other treatments include cryotherapy, radiation therapy and electrodesiccation.