Smoking is by far the biggest risk factor for developing lung cancer. That’s why recommendations for lung cancer screenings focus only on people who currently smoke or have recently quit and have a history of smoking over many years. Depending on how long and how much you smoked, it may be recommended that you get an annual lung cancer screening.
What type of lung cancer screenings are available?
The only recommended screening test for lung cancer is a low-dose computed tomography (CT scan). This test only takes a few minutes to complete and is painless. During the screening, you lie flat on a table and an x-ray machine uses a low dose of radiation to create a detailed image of your lungs. This allows medical professionals to see if there are any changes to your lungs that may indicate you have lung cancer.
Who should get a low-dose CT scan?
The current guidelines recommend that you get a low-dose CT scan every year if you meet the follow conditions:
To determine your pack-year smoking history, multiply the number of packs of cigarettes you smoked per day by the number of years you have smoked. For example, if you smoked one pack a day for 20 years, you have a 20 pack-year smoking history (1 x 20 = 20). If you smoked two packs a day for 10 years, you also have a 20 pack-year smoking history (2 x 10 = 20).
It is recommended that screenings be stopped once you have not smoked for 15 years. If you develop a health problem that severely limits your life expectancy, or if you are unwilling or unable to have surgery if the screening uncovers possible cancer, screenings are also not recommended.
These guidelines are from the US Preventive Services Task Force (USPSTF), the American Academy of Family Physicians (AAFP) and the American College of Chest Physicians. The American Cancer Society® also supports these recommendations.
Are there risks associated with lung cancer screenings?
The screening itself is quick, easy and painless, but as with all medical procedures, there are some inherent risks. That’s why lung cancer screening is only recommended for people who are at high risk of developing lung cancer due to their smoking history and age. The risks of screening include:
If you smoke or have recently quit smoking, talk to your doctor about whether a low-dose CT scan is right for you.
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