Fine Needle Aspiration of Thyroid Nodule Using Ultrasound
A fine needle aspiration (FNA) or biopsy of a thyroid nodule is a simple procedure done by an endocrinologist to check for cancer cells. The needle used is very small and a topical numbing is often used. A number of samples will be taken from different parts of the nodule to give your doctor the best chance of finding any cancer cells if a tumor is present.
You will not need to stop eating or drinking ahead of time and patients often return home or go back to work after the biopsy, without any ill effects. Although the test is not perfect, a thyroid needle biopsy should provide enough information so that other tests are not needed. Your doctor can then use these results to decide your course of treatment.
FNA Using Ultrasound
The ultrasound helps guide the needle placement at the time of biopsy and reduces the chance of an inconclusive biopsy. An ultrasound-guided FNA is done by an endocrinologist along with a pathologist.
- You will lie on a table with a pillow under your neck.
- A cloth will be put over your shirt, or you may wear a gown.
- A clear jelly will be put on your neck, and an ultrasound probe will be used to look for nodules.
- If a nodule(s) is found, your neck will be cleaned with a clear cleanser. A fine needle will be passed 3 to 6 times into the nodule. A pathologist will be there to decide whether enough samples have been obtained.
- It can take from 15 to 45 minutes. It will depend on how many nodules are biopsied.
- Results will be sent to your doctor within 5 days.
Patients often feel mild discomfort during the procedure and some soreness for one to two days after. A small amount of bruising is also common.
Phone Numbers
Endrocrinology Clinic at (608) 263-5010, Monday through Friday from 8am - 4:30pm.
After hours, weekends and holidays, call (608) 262-0486. Ask to speak to the resident on call for Endocrinology. Leave your name and phone number with the area code. The doctor will call you back.
If you live outside the area, call toll-free (800) 323-8942.
The information provided should not be used during any medical emergency or for the diagnosis or treatment of any medical condition. A licensed physician should be consulted for diagnosis and treatment of any and all medical conditions. Call 911 for all medical emergencies. Any duplication or distribution of the information contained herein is strictly prohibited.
Last Updated: 10/13/2009
Copyright © 10/13/2009 University of Wisconsin Hospitals and Clinics Authority. All rights reserved. Produced by the Department of Nursing. UWH #6368
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