Scans and X-rays
What Does Nodule Mean on a Scan Report?
Nodule · say it: NOD-yoolAlso written: small rounded lesion
Short answer
A nodule is a small, rounded lump or spot seen on a scan or felt on examination. Most are harmless, but some need follow-up.
What it means
A nodule is a small, roundish area of tissue that is firmer or denser than the tissue around it. Doctors use the word for small spots seen on scans, such as in the lungs or thyroid, or lumps felt during an examination.
Nodules are common and often found by chance. Many are caused by old infections, scarring or harmless growths.
Doctors look at features like size, shape, edges and whether it changes over time. Depending on these, they may recommend no action, a follow-up scan, or more tests.
Where you may see it
- Chest CT and chest X-ray reports (lung nodules)
- Thyroid ultrasound reports
- Breast, liver and skin examination notes
📄 How it looks on a report
4 mm solid nodule in the right upper lobe.
🙅 What it does not mean
- It does not mean cancer. Most nodules turn out to be harmless.
- It does not always need a biopsy. Many are simply checked again with a later scan.
- A nodule and a mass are not the same thing. Nodule is usually used for smaller spots.
🎯 Check yourself
Which of these is the right meaning of “Nodule”?
🗒️ Questions to ask your doctor
🧾 Reports where you will see “Nodule”
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🔗 Read more from trusted sources
- “Nodule” on MedlinePlus ↗
US National Library of Medicine
- NCI Dictionary definition ↗
US National Cancer Institute: “nodule”
- RadiologyInfo.org ↗
Radiological Society of North America and American College of Radiology
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General information about a medical word, not advice about your own results. Ask the clinician who ordered the test what it means for you.