Thyroid Nodules

A thyroid nodule is a lump or swelling within the thyroid gland, located at the front of the neck. Thyroid nodules are common and are often found incidentally during an examination or scan for another reason. Most thyroid nodules are benign (non-cancerous) and many do not cause symptoms.

Some nodules can affect thyroid hormone production (causing an overactive or underactive thyroid), and a small proportion require further investigation to exclude thyroid cancer. The purpose of assessment is to identify which nodules need monitoring, biopsy, or treatment.

At the Royal Buckinghamshire Hospital, we provide consultant-led assessment and investigation to confirm the diagnosis and recommend the most appropriate management plan.

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Types of Thyroid Nodules

Thyroid nodules can be described in several ways:

• Solid nodules – made up of thyroid tissue
• Cystic nodules – fluid-filled (or mixed solid/cystic)
• Single nodule or multiple nodules (multinodular goitre)
• “Hot” (functioning) nodules – produce thyroid hormone and may cause hyperthyroidism
• “Cold” (non-functioning) nodules – do not produce excess hormone and often require ultrasound risk assessment

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Common Causes

Thyroid nodules can develop for a variety of reasons, including:

• Benign thyroid overgrowth (common)
• Thyroid cysts (fluid-filled nodules)
• Multinodular goitre
• Inflammation of the thyroid (thyroiditis)
• Iodine imbalance (uncommon in the UK, but possible)
• Thyroid adenoma (benign tumour)
• Thyroid cancer (less common, but important to rule out when risk features are present)

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Symptoms of Thyroid Nodules

Many people have no symptoms.

When symptoms occur, they may include:

Local neck symptoms

• A visible lump or swelling at the front of the neck
• A feeling of pressure in the neck
• Difficulty swallowing (food feeling stuck)
• A sensation of a “lump in the throat”
• Hoarseness or voice change
• Breathing discomfort (especially when lying flat), or noisy breathing in severe cases

Symptoms of hormone changes (if the nodule affects thyroid function)

Overactive thyroid symptoms may include:

• Palpitations, tremor, anxiety, heat intolerance, weight loss

Underactive thyroid symptoms may include:

• Fatigue, weight gain, cold intolerance, constipation, dry skin

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Diagnosis at Royal Buckinghamshire Hospital

Assessment typically includes:

1) Clinical assessment

• Symptom review (including swallowing, voice changes, rapid growth)
• Neck examination
• Review of personal and family history and relevant risk factors

2) Blood tests

Usually to check thyroid function, such as:

• TSH (and additional thyroid hormones if needed)

These tests help identify whether the thyroid is overactive or underactive.

3) Thyroid ultrasound

Ultrasound is the key imaging test to:

• Confirm the presence of a nodule
• Measure its size
• Assess features that help estimate risk
• Check nearby lymph nodes

4) Fine needle aspiration (FNA) biopsy (when indicated)

If the ultrasound or clinical picture suggests a higher risk, or if a nodule meets size/feature thresholds, a needle biopsy may be recommended to examine cells from the nodule.

5) Additional tests (selected cases)

Depending on results, further tests may include:

• Additional blood tests
• A scan to assess thyroid activity if a functioning (“hot”) nodule is suspected
• Referral for specialist endocrine or surgical opinion where appropriate

You will be given a clear explanation of results and the recommended next steps.

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Treatment & Management

Treatment depends on the nodule type, size, symptoms, ultrasound/biopsy results, and thyroid function.

Monitoring and reassurance

If a nodule looks low-risk and is not causing symptoms, the best approach may be:

• Observation with repeat clinical review and/or follow-up ultrasound at an interval advised by your consultant

Managing thyroid hormone imbalance

If blood tests show hyperthyroidism or hypothyroidism, treatment may include:

• Medication to control thyroid hormone levels
• Longer-term management planning depending on the underlying cause

Treating symptomatic benign nodules

If the nodule is benign but causes pressure symptoms, swallowing issues, or significant cosmetic concern, options may include:

• Referral for surgical assessment (for example partial or total thyroid surgery depending on findings)
• Managing cystic nodules (in selected cases) where recurrence and symptoms are an issue

If cancer is suspected or confirmed

If biopsy or imaging suggests malignancy, urgent referral into the appropriate specialist pathway is arranged. Treatment typically involves specialist surgical and endocrine input, with care tailored to the cancer type and stage.

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When to seek urgent help

Seek urgent medical advice if you develop:

• Rapidly enlarging neck swelling
• Breathing difficulty, especially at rest or when lying flat
• New or worsening hoarseness
• Difficulty swallowing that is progressing
• A hard fixed neck lump, or new lumps in the neck (lymph nodes)
• Symptoms of severe overactive thyroid (such as chest pain, fainting, or a very fast/irregular heartbeat)

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If you have noticed a lump in your neck, have persistent swallowing or voice changes, or have been told you have a thyroid nodule on a scan, contact Royal Buckinghamshire Hospital for assessment and advice. There is no need to be registered with the hospital, or live locally.

If you have insurance which covers consultations, we can in most cases invoice the insurer directly. Where you are paying directly, any costs will always be discussed.