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www.endocrineweb.com/conditions/thyroid/thyroid-nodule-ultrasound

Ultrasound Characteristics That Suggest a Benign Nodule. Sharp edges are seen all around the nodule; Nodule filled with fluid and not live tissue (a cyst) Lots of nodules throughout the thyroid (almost always a benign multi-nodular goiter) No blood flowing through it (not live tissue, likely a cyst) More on this topic on our FNA page

radiologykey.com/ultrasound-of-thyroid-nodules

Thyroid nodules can be detected in 4% to 8% of the adult population by palpation, but in 40% to 50% of the population by ultrasound. The overwhelming majority of these represent benign hyperplastic nodules or adenomas. Approximately 5% of nodules are malignant, with papillary carcinoma representing approximately 75% to 80% of primary thyroid malignancies.

www.mayoclinic.org/diseases-conditions/thyroid-nodules/diagnosis-treatment/drc...

This imaging technique uses high-frequency sound waves to produce images of your thyroid gland. A thyroid ultrasound provides the best information about the shape and structure of nodules. Doctors may use it to distinguish cysts from solid nodules or to determine if multiple nodules are present. Doctors may also use it as a guide in performing ...

www.thyroid.org/patient-thyroid-information/ct-for-patients/vol-7-issue-1/vol...

Thyroid Ultrasound: a common imaging test used to evaluate the structure of the thyroid gland. Ultrasound uses soundwaves to create a picture of the structure of the thyroid gland and accurately identify and characterize nodules within the thyroid. Ultrasound is also frequently used to guide the needle into a nodule during a thyroid nodule biopsy.

www.thyroid.org/thyroid-nodules

Thyroid ultrasound is a key tool for thyroid nodule evaluation. It uses high-frequency sound waves to obtain a picture of the thyroid. This very accurate test can easily determine if a nodule is solid or fluid filled (cystic), and it can determine the precise size of the nodule.

radiopaedia.org/articles/assessment-of-thyroid-lesions-ultrasound

Ultrasound is the first line imaging modality for assessment of thyroid nodules found on clinical examination or incidentally on another imaging modality. This article is an overview on ultrasonographic features of thyroid nodules, which are used to determine the need for biopsy with fine needle aspiration .

www.medicinenet.com/thyroid_nodules/article.htm

Thyroid nodules may be single or multiple. A thyroid gland that contains multiple nodules is referred to as a multinodular goiter. If the nodule is filled with fluid or blood, it is called a thyroid cyst. If the nodule produces thyroid hormone in an uncontrolled manner (without regarding the body's needs), the nodule is referred to as autonomous.

healthjade.com/thyroid-nodules

Thyroid nodules and multiple thyroid nodules causes, symptoms, ultrasound, surgery, and treatment. If a biopsy shows that you have a benign thyroid nodule, your doctor may suggest simply watching your condition.

www.restartmed.com/when-should-you-worry-about-thyroid-nodules

For this reason, you never want to judge the risk of thyroid cancer based on the size of your nodule alone. You will notice that while the size is certainly a risk factor, you should also look at other risk factors including whether or not the nodule is causing symptoms, your age, and what the nodule looks like on ultrasound.

www.medhelp.org/posts/Thyroid-Cancer---Nodules--Hyperthyroidism/multiple...

This is common -- in cases of multiple nodules, it is common to see that the "dominant" nodule is not the cancer and FNA of the dominant (largest) nodule is often misleading. Not every nodule needs FNA -- this is where careful ultrasound by an expert can help pick out the ones that need FNA biopsy.