Thyroid nodules

Overview

A thyroid nodule is a lump that forms in the thyroid gland, a small butterfly-shaped gland in the front of your neck. Most thyroid nodules are not cancer (benign) and cause no problems. However, some can affect hormone levels or rarely be cancerous.

Yes, thyroid nodules are very common. Studies suggest that up to 50% of people may have a thyroid nodule by age 60, though many are too small to feel.

Thyroid nodules can occur at any age, but they are more common in women, older adults, and people with a family history of thyroid conditions.

Symptoms

Common symptoms

• Most thyroid nodules cause no symptoms. If they do, common ones include: a lump you can feel in your neck, a feeling of fullness or pressure in the neck, difficulty swallowing, hoarseness, pain in the neck or ear.

Symptoms in children

• In children, symptoms may be similar, but nodules in children are more likely to be cancerous. Any lump in a child's neck should be checked by a doctor.

Symptoms in older adults

• In older adults, nodules may be more common and often harmless. However, they can cause symptoms like hoarseness or trouble swallowing due to pressure on the throat.

Causes

Main causes

• The exact cause is often unknown. Possible causes include overgrowth of normal thyroid tissue (thyroid adenoma), cysts (fluid-filled sacs), inflammation of the thyroid (thyroiditis), or, rarely, thyroid cancer.

Risk factors

• Being female
• Being over 40
• Having a family history of thyroid nodules or thyroid cancer
• Having a history of radiation exposure to the neck
• Having certain genetic conditions

When to see a doctor

See a doctor urgently if:

• If you have trouble breathing or a rapidly growing lump in your neck, seek emergency care immediately.

Book a routine appointment if:

• If you notice a new lump in your neck, see your doctor for an evaluation. Also see a doctor if you have persistent hoarseness, trouble swallowing, or neck pain.

Diagnosis

Your doctor will first do a physical exam, feeling your neck and asking about symptoms. They may order tests to check the nodule's nature.

Tests that may be done

• Blood tests (thyroid function tests) to check hormone levels
• Ultrasound of the thyroid to see the size and features of the nodule
• Fine needle aspiration (FNA) biopsy – taking a small sample of cells from the nodule to test for cancer

What to expect at your appointment

If a nodule is found, you may have an ultrasound and possibly a biopsy. These are usually painless or cause mild discomfort. Results take a few days to a week. Your doctor will explain the findings and next steps.

Treatment

Treatment depends on whether the nodule is benign or cancerous, and if it causes symptoms. Many benign nodules need only regular monitoring.

Self-care at home

• No specific self-care for nodules, but maintaining a healthy lifestyle supports overall health.
• If you have symptoms like pressure, avoid wearing tight necklaces or scarves.

Medical treatments

If the nodule affects hormone levels (making too much thyroid hormone), you may be offered medication to control symptoms. If the nodule is cancerous or suspicious, surgery to remove the nodule or part of the thyroid may be recommended. Radioactive iodine treatment may be used for certain conditions. Your doctor will discuss the best option for you.

When is surgery considered?

Surgery may be needed if the nodule is cancerous, causes significant symptoms like trouble swallowing or breathing, or if it produces too much thyroid hormone despite treatment.

Living with this condition

Most people with thyroid nodules live normal lives without restrictions. If you have a benign nodule, you'll likely have regular check-ups to monitor it.

Lifestyle tips

• If you have symptoms like hoarseness, rest your voice.
• Avoid smoking, as it can worsen thyroid problems.
• Keep up with regular medical appointments.

Diet and exercise

No specific diet is needed for thyroid nodules alone. However, a balanced diet rich in fruits, vegetables, and whole grains supports overall health. Exercise is encouraged as tolerated.

Mental health and emotional wellbeing

Worry about a lump in your neck is understandable. Most nodules are benign, but anxiety is normal. Talk to your doctor about your concerns. If you feel very anxious, consider speaking with a mental health professional.

Prevention

There is no known way to prevent thyroid nodules. Avoiding unnecessary radiation to the neck may reduce risk.

Screening programmes

There is no routine screening for thyroid nodules. They are often found during exams for other reasons.

Complications

If left untreated

• If a cancerous nodule is left untreated, it can spread.
• If a benign nodule produces too much hormone (hyperthyroidism), it can cause heart problems, bone loss, and other issues.

Long-term outlook

The outlook for thyroid nodules is generally excellent. Most are benign and cause no problems. Even when cancer is found, thyroid cancer is highly treatable and often curable. With proper care, most people go on to live full, healthy lives.

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