13121 Thyroid Nodule

Overview

A thyroid nodule is a lump or growth that forms in the thyroid gland, a small butterfly-shaped gland in the front of your neck. Most thyroid nodules are harmless and do not cause symptoms.

Yes, thyroid nodules are very common, especially as people get older. Up to half of adults over 60 may have one.

They can affect anyone, but they are more common in women, older adults, and people with a family history of thyroid problems.

Symptoms

Common symptoms

• Most nodules cause no symptoms.
• If they grow large, they might cause a visible lump in the neck.
• Some people feel a tickle, tightness, or pressure in the throat.
• A large nodule can make swallowing or breathing feel slightly uncomfortable.

Symptoms in children

• Nodules in children are less common, but they have a higher chance of being cancer compared to adults.
• Any new lump in a child's neck should be checked by a doctor.

Symptoms in older adults

• Nodules become more common with age, but they often cause no symptoms.
• Older adults may have other medical conditions that make thyroid checkups more important.

Causes

Main causes

• The exact cause is often unknown.
• Overgrowth of normal thyroid tissue
• Fluid-filled cysts (fluid-filled sacs)
• Inflammation of the thyroid gland
• Rarely, cancer

Risk factors

• Being female
• Growing older
• Family history of thyroid nodules
• Lack of iodine in the diet (rare in places with iodized salt)
• Past radiation exposure to the neck

When to see a doctor

See a doctor urgently if:

• You notice a new lump in your neck
• Your voice becomes hoarse for no reason
• You have trouble swallowing

Book a routine appointment if:

• You have a small nodule that isn't causing problems
• You have a family history of thyroid problems
• You feel like something is in your throat

Diagnosis

Your doctor will feel your neck, ask about your symptoms, and may order blood tests to check your thyroid hormone levels. If needed, they will refer you for imaging tests.

Tests that may be done

• Thyroid function blood tests
• Ultrasound (a scan that creates a picture of your neck)
• Fine needle aspiration (a small sample of cells from the nodule, if needed)
• Thyroid scan (checks if the nodule is overactive)

What to expect at your appointment

Most tests are painless and done in the clinic or hospital. The doctor will explain the results and whether you need any follow-up.

Treatment

Treatment depends on the nodule's size, appearance, whether it causes symptoms, and whether it is making too much thyroid hormone. Many nodules just need regular monitoring.

Self-care at home

• Keep track of any changes in your neck.
• Follow your doctor's advice about regular check-ups.
• Eat a balanced diet with enough iodine, unless your doctor says otherwise.

Medical treatments

If the nodule is causing symptoms or is overactive, your doctor may recommend medication to control hormone levels, or a procedure to shrink or remove the nodule. A specialist will discuss all options with you.

When is surgery considered?

Surgery may be recommended if the nodule is large, is causing trouble swallowing or breathing, or has test results that suggest it could be cancer. Your surgeon will explain the risks and benefits.

Living with this condition

Most people with thyroid nodules live normal lives. You might feel the nodule when you swallow, but it usually doesn't affect daily activities.

Lifestyle tips

• Keep all follow-up appointments.
• Learn about your thyroid condition so you can make informed decisions with your doctor.

Diet and exercise

Eat a balanced diet. If you have an overactive thyroid, you might need to avoid too much caffeine and eat regularly. Exercise is fine unless your doctor advises otherwise.

Mental health and emotional wellbeing

A thyroid diagnosis can cause worry. It helps to talk with your doctor, family, or friends. Remember that most nodules are harmless.

Prevention

There is no known way to prevent thyroid nodules. Regular check-ups and eating a diet with enough iodine may help, but most nodules cannot be prevented.

Complications

If left untreated

• If a nodule is cancer and left untreated, it can spread to other parts of the neck or body.
• Overactive nodules can cause heart problems, weight loss, and anxiety if untreated.

Long-term outlook

The vast majority of thyroid nodules are harmless. Even if cancer is found, it is usually treatable and often curable. With proper care, most people lead normal, healthy lives.

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