What it is
A nodule is a growth within the thyroid, the gland in the front of your neck. Ultrasound describes its size and features, often giving a risk category (such as a TI-RADS score) to guide next steps.
How common is it?
Very common, especially with age — a large share of adults have at least one thyroid nodule, and only a small fraction are cancerous.
What's usually next
Depending on size and features, the options range from no follow-up, to a repeat ultrasound, to a needle biopsy (FNA) to sample the nodule. Thyroid blood tests are often checked as well.
When it usually isn't — and when it might be — worrying
Usually reassuring
- Small and described as “low risk” or “benign-appearing”
- Purely cystic (fluid-filled)
- Stable on follow-up ultrasound
Worth discussing with your doctor
- Features described as suspicious (e.g. microcalcifications, irregular margins)
- A higher TI-RADS category or recommended biopsy
- Rapid growth or new voice or swallowing changes
Questions to ask your doctor
- 1What is the size and risk category of the nodule?
- 2Do you recommend a follow-up ultrasound or a biopsy?
- 3Are my thyroid blood tests normal?
- 4What symptoms should prompt me to call sooner?
Educational use only. This explanation helps you understand terminology on your report. It is not a diagnosis, is not FDA-cleared, and does not replace your doctor. Bring questions to your care team.