Thyroid Cancer Awareness Month: What You Should Know About Thyroid Nodules and Thyroid Cancer

By Angela D. Mazza, DO, ABAARM, FAAMFM, ECNUMeabolic Center for Wellness

September is Thyroid Cancer Awareness Month, an important opportunity to increase awareness about thyroid cancer while also putting the diagnosis into perspective.

Hearing the words thyroid nodule can understandably cause concern. But one of the most important things I tell patients is this:

A thyroid nodule does not mean thyroid cancer.

Thyroid nodules are extremely common, particularly as we get older, and the large majority are benign. The key is knowing which nodules need further evaluation, which can simply be monitored, and which may require treatment.

What Is a Thyroid Nodule?

A thyroid nodule is a growth or lump within the thyroid gland, the butterfly-shaped endocrine gland located at the front of the neck.

Many people have thyroid nodules without ever knowing it. They may be discovered during a physical examination, on a thyroid ultrasound, or incidentally when imaging such as a CT scan, MRI, carotid ultrasound, or PET scan is performed for another reason.

Most thyroid nodules do not cause symptoms. Larger nodules, however, may sometimes cause neck pressure, difficulty swallowing, changes in the appearance of the neck, or other compressive symptoms.

How Common Is Thyroid Cancer?

Although thyroid nodules are common, only a minority prove to be cancerous.

Several different types of thyroid cancer exist. Papillary thyroid cancer is by far the most common, followed by follicular thyroid cancer. Less common forms include medullary and anaplastic thyroid cancers.

Fortunately, the most common differentiated thyroid cancers are often highly treatable, particularly when appropriately identified and managed.

This is why good thyroid care requires balance: we want to identify clinically meaningful cancers while avoiding unnecessary procedures or treatment for nodules that pose little or no threat.

Thyroid Ultrasound: More Than Finding a Nodule

One of the most valuable tools in evaluating thyroid nodules is a high-quality thyroid ultrasound.

Ultrasound allows us to look beyond the size of a nodule and evaluate characteristics such as:

• Whether the nodule is solid, cystic, or a combination of both

• Its shape and margins

• Echogenicity, or how the nodule appears relative to surrounding thyroid tissue

• The presence and type of calcifications or other echogenic foci

• Suspicious cervical lymph nodes

• Changes in a nodule over time

These features help determine the nodule's level of suspicion and whether a fine-needle aspiration (FNA) biopsy is appropriate.

Importantly, not every thyroid nodule needs a biopsy.

Current risk-stratification systems, including the American College of Radiology Thyroid Imaging Reporting and Data System (ACR TI-RADS), help clinicians combine ultrasound characteristics with nodule size to determine when biopsy or ultrasound surveillance is appropriate.

What Happens If a Biopsy Is Recommended?

A thyroid fine-needle aspiration biopsy is a minimally invasive procedure in which ultrasound guidance is used to collect cells from a thyroid nodule for evaluation.

The results can often tell us whether a nodule is benign, suspicious, malignant, or indeterminate.

For indeterminate nodules, additional molecular testing may sometimes help clarify the likelihood of malignancy and guide the next step.

The goal should never be to perform procedures simply because a nodule exists. The goal is to gather enough information to make an informed, individualized decision.

Does Every Thyroid Cancer Require Immediate Surgery?

Not necessarily.

Our understanding of thyroid cancer has evolved considerably. Some small, low-risk papillary thyroid cancers may be candidates for active surveillance rather than immediate surgery, depending on the tumor's characteristics, location, lymph-node findings, patient age, medical history, and individual preferences.

For patients who do require treatment, surgery remains an important cornerstone of thyroid cancer care. Depending on the situation, treatment may involve removal of part of the thyroid rather than the entire gland.

In appropriately selected patients, minimally invasive techniques such as radiofrequency ablation (RFA) are also being studied and increasingly used in specialized settings for certain thyroid tumors, including selected low-risk papillary thyroid microcarcinomas.

The important point is that thyroid cancer treatment is becoming increasingly individualized. More treatment is not automatically better treatment.

Know the Signs That Deserve Evaluation

Most thyroid nodules cause no symptoms, but it is worth discussing thyroid evaluation with your healthcare provider if you notice:

• A new lump or swelling in the neck

• A thyroid nodule that appears to be enlarging

• Persistent hoarseness or voice changes

• Difficulty swallowing

• Persistent pressure or discomfort in the neck

• Enlarged lymph nodes in the neck

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A history of significant radiation exposure to the head or neck, certain hereditary syndromes, or a family history of thyroid cancer may also influence an individual's risk and evaluation.

Thyroid Cancer Awareness Without Thyroid Cancer Fear

Perhaps one of the most important messages during Thyroid Cancer Awareness Month is that awareness should lead to appropriate evaluation—not fear or overtreatment.

Finding a thyroid nodule is the beginning of a diagnostic process, not a diagnosis of cancer.

Modern thyroid care gives us increasingly sophisticated tools to determine which nodules require biopsy, which need surveillance, and which may not require intervention at all. And when thyroid cancer is diagnosed, treatment decisions can increasingly be tailored to the biology of the tumor and the individual patient.

At Metabolic Center for Wellness, our approach to thyroid nodules emphasizes careful ultrasound evaluation, evidence-based risk stratification, ultrasound-guided biopsy when appropriate, and individualized treatment planning.

This September, Thyroid Cancer Awareness Month is a good reminder to know your thyroid, understand your options, and ask questions before deciding on the next step.

This article is intended for educational purposes and is not a substitute for individualized medical advice, diagnosis, or treatment.