Thyroid Nodules and Cancer: What Everyone Should Know

Thyroid nodules — small lumps that develop in the thyroid gland — are common. While they become more common as we get older they can affect people of all ages. Most thyroid nodules are non-cancerous (benign), but some may require further assessment.

Understanding what thyroid nodules are, what causes them, and when to seek medical advice can help individuals make informed decisions about their health. This guide offers general information about thyroid nodules and thyroid cancer. If you have concerns about your thyroid health, it’s important to consult a qualified healthcare professional.

What are thyroid nodules?

A thyroid nodule is a lump that forms in the thyroid gland, located at the front of the neck. These nodules are often discovered during routine check-ups or when a swelling in the neck becomes noticeable.

Most thyroid nodules are benign, but some may need further evaluation to rule out cancer. Nodules can vary in size and may be solid, fluid-filled, or a combination of both. Larger nodules may cause discomfort, pressure, or visible swelling in the neck.

If you notice a persistent lump or swelling, it’s advisable to seek medical advice for appropriate evaluation.

Do thyroid nodules cause cancer?

Most thyroid nodules are not cancerous. However, some nodules can develop into thyroid cancer. Factors such as nodule size, growth patterns, and ultrasound characteristics may indicate the need for further assessment.

Can you have thyroid cancer without nodules?

Yes, thyroid cancer can occur without noticeable nodules. In fact, many thyroid nodules and cancers are discovered incidentally during imaging tests or medical evaluations for unrelated concerns.

What happens if my thyroid nodule is cancerous?

If your thyroid nodule is diagnosed as cancerous, your healthcare provider may recommend treatment based on the type, size, and stage of the cancer. Common treatments include surgery, radioactive iodine therapy, and ongoing thyroid hormone therapy. Your healthcare provider will discuss the most suitable treatment options for your situation.

What causes thyroid nodule cancer?

Several factors may contribute to the development of thyroid cancer, including:

• Genetic factors: A family history of thyroid conditions may increase your risk.
• Iodine deficiency: Since iodine is essential for normal thyroid function, a deficiency may play a role.
• Thyroid inflammation: Autoimmune conditions such as Hashimoto’s thyroiditis can increase the risk.
• Radiation exposure: Past radiation treatment to the head, neck, or chest may raise the likelihood of developing thyroid cancer.

Signs and symptoms of thyroid cancer

Thyroid cancer may not cause noticeable symptoms in its early stages. However, possible signs may include:

• A lump or swelling in the neck that persists or grows
• Difficulty swallowing or breathing
• Persistent hoarseness or voice changes
• Swollen lymph nodes in the neck

These symptoms can also be linked to non-cancerous conditions. Seeking medical advice can help determine the cause and guide appropriate care.

How ENT Specialists diagnose thyroid nodules

If you have concerns about your thyroid, an ENT (Ear, Nose, and Throat) specialist or healthcare provider may recommend:

• Physical examination: Checking for lumps or swelling in the neck.
• Nasendoscopy: Assess the function of the voice box, which the thyroid overlies.
• Blood tests: Assessing thyroid hormone levels to evaluate thyroid function.
• Ultrasound imaging: Providing detailed images of the thyroid gland and nodules.
• Biopsy (Fine Needle Aspiration): Collecting a small tissue sample for analysis if a nodule appears concerning.

Additional imaging, such as CT or PET scans, may be recommended if further assessment is required.

Thyroid nodule biopsy: what does it show?

Fine needle aspiration (FNA) biopsy is commonly used to help determine whether a thyroid nodule is benign or whether further assessment is required.

Biopsy results may indicate:

• a benign nodule suitable for monitoring
• an indeterminate result requiring further review
• suspicious changes
• thyroid cancer

Biopsy findings are considered alongside ultrasound features, symptoms and clinical examination before treatment recommendations are made.

Treatment for thyroid cancer

Treatment options depend on the type, size, and stage of thyroid cancer. Common treatments include:

• Surgery: Removing part or all of the thyroid gland.
• Radioactive Iodine Therapy: Used after surgery to destroy any remaining thyroid cells.
• Thyroid Hormone Replacement: Recommended for individuals who have had their thyroid gland removed to maintain normal bodily functions.
• Radiotherapy or Chemotherapy: These treatments may be advised in cases where the cancer is more advanced or aggressive.

Your healthcare provider will recommend the most appropriate treatment based on your individual needs.

Emotional wellbeing and support

Being diagnosed with thyroid nodules or thyroid cancer can be challenging. Support from family, friends, and healthcare professionals can play a vital role in your emotional wellbeing.

Organizations such as the Cancer Council provide resources and services to help individuals and families cope with diagnosis, treatment, and recovery.

When should you see an ENT specialist for a thyroid nodule?

Many thyroid nodules are discovered during a routine examination or ultrasound and do not require immediate treatment. However, your GP may recommend referral to an ENT (Ear, Nose and Throat) specialist when further assessment is needed.

What happens during a specialist thyroid consultation?

Patients are often unsure what to expect after being referred for a thyroid nodule.

During your consultation, Dr Brett Leavers will review your GP referral, discuss your symptoms and medical history, and examine your neck and thyroid gland.

Depending on your individual circumstances, your assessment may include:

• review of thyroid ultrasound findings
• discussion of fine needle aspiration (FNA) biopsy results
• examination of the neck and lymph nodes
• assessment of swallowing, breathing and voice changes
• flexible nasendoscopy where clinically appropriate to assess vocal cord function
• discussion of whether further imaging or investigation is required

Following assessment, recommendations may include ongoing monitoring, repeat biopsy, additional investigations or discussion of surgical management where appropriate.

Thyroidectomy: when surgery may be recommended

Most thyroid nodules are benign and can be monitored safely over time. However, some nodules require further treatment because of their size, biopsy findings or associated symptoms.

When clinically appropriate, thyroidectomy (surgical removal of part or all of the thyroid gland) may be discussed as one of the available treatment options.

The decision to proceed with surgery depends on several factors, including the characteristics of the nodule, biopsy results, symptoms and your overall health.

When does a thyroid nodule need surgery?

One of the most common questions patients ask is whether surgery is necessary.

Most thyroid nodules do not require surgery. However, when biopsy findings are concerning, symptoms are developing, or a thyroid nodule continues to grow, surgery may be one of the management options discussed.

The role of specialist assessment is to determine whether ongoing monitoring remains appropriate or whether treatment options, including surgery, should be considered.

What happens during a thyroidectomy?

A thyroidectomy is performed under general anaesthetic in hospital.

Depending on the condition being treated, surgery may involve removing one thyroid lobe (lobectomy) or the entire thyroid gland (total thyroidectomy).

Before surgery, Dr Brett Leavers discusses:

• why surgery is being recommended
• the planned extent of surgery
• expected recovery
• possible risks and complications
• whether thyroid hormone replacement may be required afterwards
• follow-up care

Patients are encouraged to ask questions to support informed decision-making.

Thyroidectomy recovery

Recovery following thyroidectomy varies depending on the extent of surgery and individual circumstances.

Many patients can expect:

• a short hospital stay
• gradual return to normal daily activities over approximately one to two weeks, depending on recovery
• follow-up appointments to monitor healing
• ongoing review of thyroid function where appropriate

If all of the thyroid gland is removed, thyroid hormone replacement therapy may be recommended as part of long-term management.

Dr Brett Leavers will provide individualised advice regarding recovery, wound care and follow-up after surgery.

Seeking a second opinion for a thyroid nodule

Being told you may need thyroid surgery can be overwhelming, and many patients choose to seek a second opinion before making treatment decisions.

A specialist review can help clarify:

• biopsy findings
• ultrasound results
• whether surgery is currently recommended
• the extent of surgery being proposed
• alternative management options where appropriate

Dr Brett Leavers provides comprehensive assessment for patients seeking further evaluation of thyroid nodules or thyroid cancer following referral from their GP or another medical specialist.

Booking a specialist consultation for thyroid nodules

If your GP has recommended further assessment for a thyroid nodule or thyroid cancer, an appointment with an ENT specialist can help clarify your diagnosis and discuss the available management options.

Before your consultation, it is helpful to bring:

• a current GP referral
• thyroid ultrasound reports
• biopsy or pathology results
• recent blood test results
• previous CT or other imaging, if available

Dr Brett Leavers consults across Sydney and New South Wales, providing specialist assessment of thyroid nodules, thyroid cancer and related head and neck conditions.

Request an appointment