The answer to this question is both YES and NO If cancer of the breast is detected at early stages, it is curable, but if it is detected at late stages, it may not be curable. Breast cancer is staged 0, and 1 is treatable, and the survival rate is high. At this stage, the cancer is still localized to the breast. At late stages, the cancer cells have spread to other parts of the body, affecting other organs; this makes it difficult to cure such conditions.
Even if breast tissue is excised, it cannot undo the damage done to other organs. People with late-stage breast cancer are treated with chemotherapy, radiotherapy, and surgery, and hormone therapy. In summary, early stages are curable, and survival rate is high, but when the cancer is at late stages and has metastasized to other organs, it is much harder to treat.