A radiologist analyzes your CT scan images and sends the results to your doctor. The radiologist looks for abnormalities that might indicate a lung cancer.

Examples of lung CT scan results include:

  • No abnormalities discovered. If no abnormalities are discovered on your lung CT scan, your doctor may recommend you undergo another scan in a year. You may continue annual scans until you and your doctor determine they no longer offer benefit.
  • Lung nodules. Lung cancer may appear as one or more small spots in the lungs. Unfortunately, many other lung conditions look the same, including scars from lung infections and noncancerous (benign) growths.

    Your doctor may recommend another lung CT scan in a few months to see if the lung nodule grows. Rapidly growing nodules are more likely to be cancerous.

    A very large nodule may also be more likely to be cancerous. For that reason, your doctor may recommend additional tests, such as a procedure (biopsy) to remove a piece of a very large nodule for laboratory testing.

  • Other health problems. Your lung CT scan may detect other lung and heart problems that are common in people who have smoked for a long time, such as emphysema and hardening of the arteries in the heart. Your doctor may recommend additional tests depending on the condition.
Apr. 10, 2014