Question: how long does it take for a basal cell carcinoma to spread?
Answer: The tumors enlarge very slowly, sometimes so slowly that they go unnoticed as new growths. However, the growth rate varies greatly from tumor to tumor, with some growing as much as ½ inch (about 1 centimeter) in a year. Basal cell carcinomas rarely spread (metastasize) to other parts of the body.