The thyroid is part of the endocrine system that affects the body's metabolism and growth. It is a small butterfly-shaped gland that lies in front of the trachea. The thyroid's primary function is to produce hormones that make many cells in your body function correctly. Its proper or improper function can affect our:
The thyroid gland may enlarge or produce nodules to maintain adequate hormone production. We call these conditions thyromegaly and nodular or multinodular goiter, respectively. Some autoimmune conditions, such as Graves disease or Hashimoto's Thyroiditis, can also cause the thyroid gland to change shape or function. If the gland is actively inflamed, accompanied by an abrupt change in function, neck swelling, or neck redness, that may indicate a condition called toxic thyroiditis.
When imaging tests show suspicious findings, we may recommend a biopsy of the thyroid.
Ultrasound uses a small hand-held transducer (wand) that emits sound waves to display images of the thyroid gland. The technologist and specialized radiologist use these images to interpret the findings. During a thyroid ultrasound, we examine:
The size of the thyroid gland
The thyroid gland’s texture
Nearby lymph nodes
Any nodules
The vessels of the thyroid gland
Radiologists use thyroid ultrasound to check any physiologic change in your clinical examination. A thyroid gland with excess vascularity can indicate hyperthyroidism, while low vascularity to the thyroid can be seen with hypothyroidism. Radiologists may also order an ultrasound if you have symptoms such as difficulty swallowing or hoarseness. Ultrasound may not be needed if you have a normal-sized gland.
Sometimes a single thyroid nodule enlarges and not the whole gland, which may necessitate a thyroid ultrasound-guided biopsy of the thyroid gland. Although most thyroid nodules appear benign (noncancerous), some have suspicious characteristics, such as an irregular shape or suspicious calcifications requiring a thyroid needle biopsy.
Ultrasound-guided thyroid biopsy is a medical procedure that involves using ultrasound imaging to guide the insertion of a needle into the thyroid gland to obtain a tissue sample for examination.
During the procedure, the patient lies on their back. The skin over the thyroid gland is cleaned and a local anesthetic is injected to numb the area. The ultrasound probe is then placed on the neck to locate the nodule or abnormality to be biopsied. A thin needle is inserted through the skin and into the nodule, guided by the real-time ultrasound image on a screen. Once the needle is in the correct position, several samples of tissue are collected and sent to a laboratory for analysis.
Thyroid nodules are common, and most are benign. However, a small percentage of nodules may be cancerous, and it is important to evaluate them to determine the appropriate treatment.
Ultrasound-guided biopsy is a safe and effective way to diagnose thyroid cancer. The procedure is minimally invasive and can be performed in an outpatient setting. It typically takes less than 30 minutes to complete and has a low risk of complications.
If you have a suspicious thyroid nodule, your doctor may recommend an ultrasound-guided biopsy to determine whether it is cancerous. The biopsy results can help your doctor determine the best course of treatment for you.
With multiple location across the Denver area, we make it easy for you to find a “Women’s Imaging Center near me” or a “Medical Diagnostic Imaging Center near me”