Computed tomography (CT) of the chest provides high-resolution pictures of the lungs, allowing detection of abnormal spots called “nodules” within the lungs. These nodules are usually too small to be seen on chest X-ray.
Recent research shows that patients with a high risk for lung cancer and who undergo a yearly lung cancer screening with a low-dose chest CT have lung cancers diagnosed at an earlier stage and smaller in size than if no screening test were used.
Benefits:
Lung cancer screening with a chest CT discovers lung cancers when they are smaller and potentially more curable.
Recent studies using chest CT have shown 60- 80% of lung cancers are diagnosed in Stage IA, the earliest stage of lung cancer. If no screening test is performed, only 15% of lung cancer patients are diagnosed with Stage IA cancer.
Although early detection of lung cancer with screening chest X-rays did not save lives, it is possible that diagnosis of lung cancer at an even earlier point with chest CT will prevent deaths from lung cancer.