Thyroid Fine Needle Aspiration (FNA) Sydney
A Thyroid Fine Needle Aspiration (FNA) is a simple, minimally invasive procedure that uses ultrasound guidance to sample cells from a thyroid nodule or abnormality. It is the most accurate first-line method for assessing thyroid nodules. Medicare-eligible FNA procedures are fully bulk-billed at Advicon Imaging.
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Description of Thyroid Fine Needle Aspiration (FNA)
Thyroid FNA is performed when a thyroid nodule or abnormality is detected on ultrasound or through clinical examination. The procedure helps determine whether a nodule is benign or requires further investigation. Using real-time ultrasound guidance, the radiologist inserts a very fine needle into the targeted area to collect cells for cytological analysis.
Thyroid FNA is recommended for:
- Thyroid nodules seen on ultrasound
- Enlarged or suspicious lymph nodes
- Multinodular goitre with dominant nodules
- Monitoring changes in known nodules
- Investigating abnormal thyroid function tests (when related to structural findings)
The procedure is quick and well tolerated. Local anaesthetic is used to minimise discomfort, and the fine needle typically causes only mild pressure. The collected sample is analysed by a specialist pathology team using internationally recognised classification systems such as the Bethesda criteria.
Most thyroid nodules are benign, and FNA helps avoid unnecessary surgery. If results are indeterminate or insufficient, your doctor may request a repeat FNA or further imaging.
At Advicon Imaging, all thyroid FNAs are performed by experienced radiologists using high‑resolution ultrasound for optimal accuracy.
Frequently Asked Questions
What is a Thyroid FNA?
It is a procedure where a very fine needle is guided into a thyroid nodule to collect cells for microscopic examination.
Why do I need this test?
It helps determine whether a thyroid nodule is benign or requires further assessment.
Does the procedure hurt?
Most patients describe only mild pressure or momentary discomfort. Local anaesthetic is used to keep you comfortable.
Do I need preparation?
Preparation is straightforward:
- Inform us if you take blood thinners—some may need to be paused.
- Wear comfortable clothing with access to the lower neck.
- Tell us if you have allergies or may be pregnant.
How long does it take?
The procedure typically takes 10–15 minutes, with a total visit time of around 30 minutes.
Will I have bruising or swelling?
Mild bruising or soreness is possible but usually settles quickly.
Can I drive afterward?
Yes. You can return to normal activities unless advised otherwise.
Are there risks?
Risks are very low and may include temporary discomfort, bruising, or rare infection. Ultrasound guidance minimises complications.
How accurate is Thyroid FNA?
It is the most reliable initial test for thyroid nodules and helps avoid unnecessary surgery in many cases.
When will I get my results?
Pathology results are normally available within a few days and are sent directly to your doctor.
Is this procedure bulk-billed?
Yes. Medicare-eligible Thyroid FNA procedures are fully bulk-billed at Advicon Imaging.