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Screening tests help your doctor look for a problem before you have symptoms. This increases your chances of finding the problem early, when it’s more treatable.

Studies don’t show that routine screening for lung cancer is right for most people. But it may help those who have the highest risk for lung cancer-people 55 and older who are or were heavy smokers.

Screening won’t prevent cancer. And it may not find all lung cancers. But research shows that if people who are at higher risk have this test every year, they’re less likely to die from lung cancer.

Lung cancer screening is done with a low-dose CT scan. A CT scan uses X-rays, or radiation, to make detailed pictures of your body. Experts recommend that screening be done in medical centers that focus on finding and treating lung cancer.

Who should be screened for lung cancer?

Annual lung screening is only recommended for heavy smokers. That means people with a smoking history of at least 30 pack years. A pack year is a way to measure how heavy a smoker you are or were.

To figure out your pack years, multiply how many packs a day (assuming 20 cigarettes per pack) you smoke by how many years you have smoked. For example:

• If you smoked 1 pack a day for 15 years, that’s 1 times 15. So you have a smoking history of 15 pack years.
• If you smoked 1½ packs a day for 20 years, that’s 1.5 times 20. So you have a smoking history of 30 pack years.
• If you smoked 2 packs a day for 15 years, that’s 2 times 15. So you have a smoking history of 30 pack years.

The U.S. Preventive Services Task Force recommends annual lung cancer screening if:

• You are 55 to 80 years old.
• And you have a smoking history of at least 30 pack years.
• And you still smoke, or you quit within the last 15 years.
• And you are in good health overall. (Having a serious health problem might mean that you couldn’t have treatment for lung cancer. The treatment could be too high-risk, and it might not help you live longer.)

Risks of lung cancer screening

CT screening for lung cancer isn’t perfect. It can show an abnormal result when it turns out there was not any cancer. This is called a false-positive result. This means you may need more tests to make sure you don’t have cancer. These tests can be harmful and cause a lot of worry.

These tests may include more CT scans and invasive testing like a lung biopsy. In a biopsy, the doctor takes a sample of tissue from inside your lung so it can be looked at under a microscope. A biopsy is the only way to tell if you have lung cancer. If the biopsy finds cancer, you and your doctor will have to decide how or whether to treat it.

Some lung cancers found on CT scans are harmless and would not have caused a problem if they had not been found through screening. But because doctors can’t tell which ones will turn out to be harmless, most will be treated. This means that you may get treatment-including surgery, radiation, or chemotherapy-that you don’t need.

There is a small chance of getting cancer from being exposed to radiation. A low-dose CT scan uses more radiation than a regular chest X-ray. But it uses much less than a regular-dose CT scan. You and your doctor will decide if the possibility of finding lung cancer early is worth the risk of having this test and being exposed to the radiation.

Registered Dietitians provide nutrition diagnosis, therapy, and counseling services for the purpose of disease management. A physician’s referral is required for nutritional therapy services.

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Medical Nutrition Therapy is also available at Richland Hospital for Oncology patients. For more information on getting your chemotherapy at the Richland Hospital, call us or talk with your oncologist about your options.

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