The success rate of prostate cancer treatment depends on several factors, including the stage and aggressiveness of the cancer, the type of treatment used, and the patient's age and overall health.

In general, the success rate for treating early-stage prostate cancer is high. For example, surgery for localized prostate cancer has a success rate of about 90% in terms of achieving complete removal of the cancer. Similarly, external radiation therapy for localized prostate cancer has a success rate of about 85-90%.

For advanced-stage prostate cancer, the success rate of treatment depends on the aggressiveness of the cancer and the patient's overall health. Hormonal therapy and chemotherapy can help to slow the progression of advanced prostate cancer, but a cure is less likely. In these cases, the goal of treatment is often to extend survival and improve quality of life.

It is important to note that the success rate of prostate cancer treatment varies greatly depending on individual circumstances, and the best course of action will depend on the specifics of each case. It is important to discuss all treatment options with a doctor and to consider all available information when making a decision.