Common types of cancer treatment


Many people with cancer have surgery, especially if the cancer seems to be contained in one area (localized). Surgery may be used to remove it along with any nearby tissue that might contain cancer cells.

Sometimes it’s hard to tell how much surgery is needed until the surgeon sees the extent of the cancer during the operation. Surgery is most successful when the tumor has not spread to other areas. Surgery offers the greatest chance of a cure for many types of cancer. It may also be used to treat problems caused by cancer, such as taking out a tumor that’s blocking the intestine.

Other treatments, such as radiation therapy and chemotherapy, may be used along with surgery. They may be given before or after the surgery.

Radiation therapy

Like surgery, radiation (RAY-dee-A-shun) therapy is used mostly to treat localized cancers – those contained in one area. Radiation destroys cancer cells or damages them so they can’t grow. It can be used alone or along with surgery or chemotherapy. More than half of all people with cancer get radiation at some point.

How is radiation given?

Radiation is given 2 ways: either high-energy rays are aimed from a machine (external radiation) or implants are put into the body near the tumor.

External radiation: Getting external radiation is painless, much like having an x-ray taken. It’s usually done in an outpatient setting, and the treatments take very little time. Treatment is most often given 5 days a week for 5 to 8 weeks, depending on the size, place, and type of cancer being treated.

Radiation implants: In some cases, radiation may be given through implants placed inside the body. Another name for radiation given as an implant is brachytherapy (BRAY-kee-THAIR-uh-pee).

This type of radiation uses small containers of radiation that are placed in or near the tumor. Implants allow a person to get a higher total dose of radiation to a smaller area and in a shorter amount of time than with external radiation. Some implants can be put in at an outpatient center, while others may require that the person stay in the hospital for a few days. Implants are sometimes put in while a person is in a deep sleep, which is called general anesthesia (AN-es-THEE-zhuh). Other implants only require that the area be made numb (local anesthesia). Implants can be permanent or temporary.

Side effects of radiation therapy

Side effects vary from patient to patient. The most common side effects are feeling tired, skin changes in the area of treatment, and some loss of appetite. Other side effects usually are related to the treatment of specific areas, such as hair loss after radiation treatment to the head. Most side effects go away in time, but some might last or might not show up until years later. Be sure to talk to your cancer care team about any problems you have – there are often ways to help.


Chemotherapy (pronounced KEY-mo-THAIR-uh-pee, but most people call it “chemo”) is treatment with strong drugs that are most often given by mouth or by injection. In most cases, more than one chemo drug is used. Unlike radiation therapy or surgery, chemo drugs can treat cancers that have spread throughout the body because they travel through the bloodstream. It’s given for different reasons, depending on the type of cancer and its stage.

Chemo can be used to:

  • Cure the cancer.
  • Keep it from spreading.
  • Kill cancer cells that may have already spread.
  • Slow the cancer’s growth.
  • Relieve symptoms caused by cancer.
  • Shrink a tumor before surgery is done to remove it.
  • Lower the risk of cancer coming back after surgery.

Talk with your doctor or your cancer care team to find out the purpose of your chemo.

How is chemo given?

Chemo is given in cycles, each followed by a rest period. A cycle might be one dose followed by days or weeks without treatment. The rest period gives the body’s normal cells time to recover. Chemo cycles are set up in other ways, too. Some drugs work best when they’re given a few days in a row, or every other day, followed by a time of rest.

If more than 1 drug is used, the treatment plan will show how often and when each drug should be given. The number of cycles you get may be planned before treatment starts, based on the type and stage of cancer. Sometimes the plan may be more flexible. This lets the doctor space the cycles based on how the treatment affects the cancer and your overall health.

Side effects of chemo

Side effects of chemo depend on the type of drugs, the amounts taken, and the length of the treatment. The most common side effects are nausea and vomiting, short-term hair loss, greater chance of infections, and tiredness. Chemo drugs can have other side effects. Be sure to ask your doctor or nurse what to watch for based on the drugs you’re getting.

Most side effects can be controlled with medicines, supportive care, or by changing the treatment schedule. If you have side effects, ask your doctor or nurse about ways to help ease them. It’s important to tell your cancer care team about any side effects you have because some, like fever and infection, may need to be treated right away.

People getting chemo sometimes become discouraged about the length of time the treatment takes or the side effects they’re having. If this happens to you, talk to your doctor. There are often ways to reduce the side effects or make them easier to manage. Keep in mind that the expected benefits of the treatment should outweigh any problems you have because of it.

Other drugs used to treat cancer

Some newer cancer treatments use drugs that are different from what most people think of as chemo. Examples of these drugs are biologic therapies and targeted therapies.

Biologic (BY-o-LA-jick) therapies are sometimes called immunotherapy (IM-yuh-no-THER-uh-pee). These treatments use the body’s immune system to fight cancer or lessen the side effects of some cancer treatments. Different biologic therapies act in different ways. They can stop or slow down cancer cell growth, help healthy immune cells control cancer, or help repair normal cells damaged by other forms of cancer treatment.

Targeted therapies are drugs that target the specific gene changes that help cancer cells grow. They attack the cancer cells’ inner workings – the parts that make them different from normal, healthy cells.

These drugs tend to have different side effects from standard chemo drugs. They are often given along with standard chemo and/or other cancer treatments.

Complementary and alternative therapy

When you have cancer, you are likely to hear about other ways to treat it or relieve symptoms. These other ways are different from the mainstream (standard) medical treatments used by your cancer care team. They can include vitamins, herbs, special diets, or methods such as acupuncture or massage – among many others.

Not everyone describes complementary and alternative therapies the same way, so it can be confusing. The American Cancer Society uses complementary to refer to medicines or treatments that are used along with your regular medical care. Alternative treatments are those used instead of standard medical treatment.

Complementary methods most often are used to help you feel better. Some examples are meditation to reduce stress, acupuncture to relieve pain, or peppermint tea to ease nausea. There are many others. Though some of these methods have been studied and are known to help, others have not been tested. Many of those that have been tested have not been proven to be helpful, and a few have even been found harmful.

Alternative treatments are those that are used instead of standard medical care. These treatments have not been proven safe, and clinical trials have not proven that they work. Some of these methods may even be harmful. Most of the time, the biggest danger is that you can lose the chance to benefit from standard treatment. Delays or interruptions in your medical treatments may give the cancer more time to grow and make it less likely that treatment will help.

Sometimes people suggest that their method can cure cancer without having serious side effects, and it’s normal to want to believe them. But the truth is that most alternative treatments have not been tested in scientific studies. So far, the alternative treatments that have been studied have not been proven to work in treating cancer.

Contact us at 1-800-227-2345 to learn more about complementary and alternative methods in general and to find out about the specific methods you are looking at. You can also see “ Complementary and Alternative Medicine” for more information.

Clinical trials

You may have had to make a lot of decisions since you’ve been told you have cancer. One of the most important decisions you’ll make is working with your cancer care team to choose which treatment is best for you. You may have heard about clinical trials being done for your type of cancer. Or maybe someone on your cancer care team has mentioned a clinical trial to you.

Clinical trials are carefully controlled research studies that are done with patients. These studies test whether a new treatment is safe and how well it works. Clinical trials may also test new ways to find or prevent a disease. These studies have led to many new ways to prevent, diagnose, and treat cancer.

A clinical trial is only done when there’s good reason to believe that the treatment, test, or procedure being studied may be better than the one used now. Treatments used in clinical trials are often found to have real benefits and sometimes fewer side effects than today’s treatments. If that happens, the new treatment usually goes on to become tomorrow’s standard treatment.

To find out more about clinical trials for your type of cancer, ask your cancer care team if your clinic or hospital offers clinical trials.

Taking part in a clinical trial doesn’t keep you from getting any other medical care you need. You are free to leave the study at any time, for any reason. You can get a lot more information on clinical trials in Clinical Trials: What You Need to Know. 

The American Cancer Society medical and editorial content team

Our team is made up of doctors and oncology certified nurses with deep knowledge of cancer care as well as journalists, editors, and translators with extensive experience in medical writing.

Last Medical Review: February 20, 2015 Last Revised: February 20, 2015

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