Cancer survival rate: What it means for your prognosis

When first diagnosed with cancer, many people ask about the chance their cancer will be cured. This is called a prognosis. You might want to know whether your cancer is relatively easy or harder to cure. Your healthcare professional can't predict the future. However, your healthcare professional can make an estimate based on other people's experiences with the same cancer.

What is a cancer survival rate?

Cancer survival rates or survival statistics tell you the percentage of people who survive a certain type of cancer for a specific amount of time. Cancer statistics often use an overall five-year survival rate.

Survival rates are usually given in percentages. For instance, the overall five-year survival rate for bladder cancer is 77%. That means that of all people who have bladder cancer, 77 of every 100 are living five years after diagnosis. Conversely, 23 out of every 100 are not alive within five years of a bladder cancer diagnosis.

Cancer survival rates are based on research from information gathered on hundreds or thousands of people with a specific cancer. An overall survival rate includes people of all ages and health conditions who have been diagnosed with a specific type of cancer. This also includes those diagnosed very early and those diagnosed very late.

Your healthcare professional may be able to give you more-specific statistics based on your stage of cancer. For instance, 61% of people diagnosed with early-stage lung cancer live for at least five years after diagnosis. The five-year survival rate for people diagnosed with late-stage lung cancer that has spread to other areas of the body is 7%.

Overall survival rates don't specify whether cancer survivors are still undergoing treatment at five years. Survival rates also don't say if they've become cancer-free. Other types of survival rates that give more-specific information include:

• Disease-free survival rate. This is the number of people who have no cancer after treatment.
• Progression-free survival rate. This is the number of people whose cancer is stable after treatment. This includes people who were cured after treatment. It also includes those who still have cancer but treatment is helping to keep the cancer from growing.

Cancer survival rates often use a five-year survival rate. That doesn't mean cancer can't come back after five years. Certain cancers can return many years after first being found and treated. For some cancers, if the cancer has not come back by five years after initial diagnosis, the chance of it returning later is very small. Discuss the risk of your cancer returning with your healthcare professional.

How are cancer survival rates used?

You and your healthcare team might use survival statistics to:

• Understand your prognosis. The experiences of people in your same situation can give you and your healthcare team an idea of your prognosis. Prognosis is the chance that your cancer will be cured. Your prognosis also might be affected by other factors, such as age and general health. Your healthcare team uses these factors to help you understand the seriousness of your condition.

• Develop a treatment plan. Statistics also can show how people with your same cancer type and stage respond to treatment. You can use this information, along with your goals for treatment, to weigh the pros and cons of each treatment option.

  For instance, if two treatments give you similar chances for remission, but one has more side effects, you might choose the option with fewer side effects.

  In another example, a treatment may offer a chance for a cure, but only for one or two people out of every 100. For some, these chances are promising enough to put up with side effects. For others, the chance for a cure isn't worth the treatment's side effects.

  Your healthcare team can help you understand the benefits and risks of each treatment.

What can't cancer survival rates tell you?

Cancer survival statistics can be frustrating. The survival rate for people with your particular cancer might be based on thousands of people. Cancer survival rates can give a general idea about most people in your situation. However, they can't give your individual chances for cure or remission. For that reason, some people ignore cancer survival statistics.

Survival statistics don't take into account other medical conditions you have. If your health is otherwise perfect, you're likely to have a greater chance of survival than the statistics suggest.

If you have other very significant medical conditions, you may not have the chance of survival suggested by the statistics. Your healthcare team may be able to help adjust the statistics for your specific situation.

Survival rates have other limitations. For instance, they can't:

• Give you information about the latest treatments. People included in the latest cancer statistics were diagnosed more than five years ago. The effects of any recent treatment discoveries won't affect survival statistics for at least five years.
• Tell you what treatments to choose. That's up to you and your healthcare team. For some people, the treatment with the greatest chance for remission is the one they'll choose. But many people think about other factors when making this decision. These factors may include the side effects, cost and treatment schedule.

You might choose to ignore cancer survival rates

It's up to you whether you want to know the survival rates that go along with your type and stage of cancer. Survival rates can't tell you about your situation. You might find that the statistics are impersonal and not helpful. But some people want to know everything they can about their cancer. For that reason, you might choose to know all the relevant statistics.

Knowing more about your cancer may reduce your anxiety as you analyze your options and begin your treatment. However, survival statistics can be confusing and frightening. Tell your healthcare professional if you'd prefer not to pay attention to the numbers. Some people prefer to know the "big picture," rather than detailed statistics. Let your healthcare professional know how you prefer to get the information. And if you have any questions or concerns about the statistics related to your cancer, talk to your healthcare professional.