What are thyroid nodules?
A thyroid nodule is a lump or growth within the thyroid — the butterfly-shaped gland at the base of the neck that regulates metabolism. Nodules may be solid, fluid-filled (cystic), or a mix of both. They are very common: by age 60, roughly half of adults have at least one, and most are found by chance. The large majority are benign.
Are thyroid nodules dangerous?
Usually not. About 90–95% of thyroid nodules are benign and never cause problems. A small percentage are cancerous, and some benign nodules grow large enough to cause pressure, difficulty swallowing, visible neck swelling, or overproduction of thyroid hormone. The purpose of evaluation is to find the few nodules that need treatment while reassuring the many that do not.
Symptoms vs. incidental findings — how are nodules usually found?
Most nodules cause no symptoms and are discovered incidentally — on a physical exam or on imaging (ultrasound, CT, or MRI) ordered for another reason. When symptoms do occur they may include a visible or palpable lump, a sensation of fullness or pressure in the neck, difficulty swallowing, hoarseness, or — if a nodule overproduces hormone — palpitations, weight loss, or anxiety.
How does evaluation work?
Evaluation answers two questions: is the nodule benign, and is it causing a problem? It usually begins with a clinical exam and a thyroid blood test (TSH), followed by a high-resolution neck ultrasound to assess the nodule’s size and features. Depending on those findings, an ultrasound-guided fine-needle aspiration (FNA) biopsy may be recommended to confirm whether a nodule is benign. Many nodules need only periodic monitoring.
When should you see a specialist?
Consider an endocrinology evaluation if you have a nodule larger than about 1 cm, a nodule with concerning ultrasound features, an abnormal thyroid blood test, a nodule that is growing or causing symptoms, or a personal or family history of thyroid cancer or neck radiation. An endocrinologist can interpret your ultrasound and labs together, decide whether a biopsy is needed, and coordinate the right next step — sparing you unnecessary procedures while making sure nothing important is missed.
What happens at an endocrine evaluation?
At your visit, our physicians review your history, examine your neck, and assess your thyroid function. We perform high-resolution thyroid ultrasound in the office and, when indicated, ultrasound-guided FNA biopsy — so diagnosis happens in one place, without separate referrals. We then explain the findings in plain language and outline your options, whether that is reassurance and monitoring, medical management, or treatment of a nodule that needs it.
