Thyroid Nodules (cont.)
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Ultrasound of the thyroid
This test uses sound waves to take a picture of the thyroid. Similar to the prenatal ultrasound of the fetus, a cold lubricant jelly is placed on the neck. Then, using an external probe, ultrasound images of the thyroid gland are obtained.
An ultrasound can reveal which thyroid nodules are larger than 1.0 to 1.5 centimeters, requiring further evaluation for cancer.
In addition to size, other nodule characteristics that can be noted on a thyroid ultrasound include the following:
Medically Reviewed by a Doctor on 5/20/2013
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