In short: A nodule is a small, round finding in the lung (up to 3 cm) and is very common on CT scans. Most nodules are benign. Whether to monitor it, repeat the scan or carry out further investigation depends on the features of the nodule and on your personal risk factors.
What determines the recommendation
- Size of the nodule
- Structure and density: solid, ground-glass or part-solid
- Shape and margins
- Change over time, compared with previous scans
- Risk factors: smoking, age, exposures and family history
What the options are
In most cases the recommendation is CT follow-up according to accepted guidelines (such as the Fleischner Society guidelines). When there are suspicious features, a PET-CT is added, and sometimes a biopsy by bronchoscopy or under CT guidance. In complex cases the scans are also reviewed with a specialist in thoracic radiology.
What to bring to your appointment
- The scan itself (a disc or a viewing link), not only the written report
- Previous CT scans for comparison, if available
- A list of medications and your medical history
Frequently asked questions
A nodule was found on my scan. Is it cancer?
In most cases, no. Most nodules are old scars or other benign findings. A structured assessment is designed to identify the minority that need further investigation, and to spare everyone else unnecessary tests.
Why is it important to bring old scans?
A solid nodule that has not changed over two years or more is almost always benign. Ground-glass nodules grow more slowly, so they are followed for longer. Comparison with previous scans often avoids additional tests.
Related topics
General information only; it does not replace a medical consultation. עברית