Listen In most cases the earlier a cancer is diagnosed and treated the better the outcome. Why find cancer early? For most cancer types, finding it early means treatment has a better chance of success. Find cervical cancer early Early changes to the cells can be detected before cancer of the cervix develops. Find bowel cancer early Approximately 90 per cent of bowel cancers can be successfully treated if found at an early stage. Find skin cancer early Approximately 95 per cent of melanomas can be successfully treated if detected early. Find breast cancer early Finding and treating breast cancer early may improve the outcome.