What is a Thyroid Nodule? Symptoms and Treatment Methods

Thyroid nodules are abnormal growths of cells or fluid-filled lumps that form within the butterfly-shaped thyroid gland at the front of your neck. While these lumps are mostly benign (non-cancerous) and often discovered by chance during routine check-ups, they can immediately spark fears of cancer. However, the vast majority are completely harmless. Still, in some cases, due to growth, hormonal imbalances, or suspicious cellular structures, they may require close monitoring, a biopsy, or surgical intervention.

• They are quite common in the general population, and the likelihood of developing them increases with age.
• About 90 to 95 percent of nodules are benign and carry no risk of cancer.
• Most lumps do not cause symptoms; sometimes, they can cause difficulty swallowing or a visible swelling in the neck.
• Diagnosis most commonly involves ultrasonography and, if necessary, a fine-needle aspiration biopsy.
• The treatment plan is determined by the lump's size, growth rate, and whether it secretes hormones.

What is a Thyroid Nodule?

Located at the lower front part of our neck, just in front of the windpipe, the thyroid gland produces crucial hormones that regulate our body's metabolism. The simplest answer to the question "what is a thyroid nodule?" is that these are round or oval-shaped lumps occurring within the tissue of this gland, distinct from the normal tissue. These lumps can be made of solid tissue or appear as fluid-filled cystic structures. In regions where iodine deficiency is common, such as Türkiye, these lumps are encountered very frequently.

Nearly half of adults over the age of fifty have at least one lump detected during a physical exam or ultrasound imaging. They are seen more frequently in women than in men. When patients notice a swelling in their neck, they naturally panic; just like finding a lump in the breast, worst-case scenarios immediately come to mind. However, the overwhelming majority of these lumps are benign and not life-threatening. The important thing is that these detected structures are thoroughly evaluated by a specialist physician, correctly classified, and safely monitored.

Causes and Risk Factors

Although the exact cause of lump formation in the thyroid gland cannot be clearly pinpointed in every patient, it is well known in the medical world that certain factors pave the way for this condition. Iodine deficiency is one of the most common causes. Iodine is the fundamental building block for the production of thyroid hormones; when not consumed sufficiently, the gland struggles to work harder, and tissue growths can develop during this process.

In individuals with a family history of thyroid diseases or thyroid cancer, the risk is significantly higher due to genetic predisposition. Additionally, autoimmune diseases such as Hashimoto's thyroiditis, characterized by chronic inflammation of the thyroid gland, can disrupt the gland's structure and trigger abnormal cell accumulations. Having received radiation therapy to the head and neck region during childhood or early youth is a major environmental factor that increases the likelihood of cellular abnormalities in later years. The natural cellular aging changes occurring in the thyroid tissue as we grow older are also a natural process that increases the frequency of these structures.

Thyroid Nodule Symptoms

These lumps, which often cause no complaints at all, are usually found by chance during a neck ultrasound or doctor's examination performed for another reason. However, when the lump grows or begins to produce hormones, some specific thyroid nodule symptoms may manifest. A visible swelling or a palpable hardness at the front of the neck is the most common finding.

If the lump grows and exerts physical pressure on the windpipe or esophagus, mechanical complaints such as a feeling of something stuck when swallowing, difficulty breathing, hoarseness, or a cracking voice may develop. In some cases, the lump escapes the normal control mechanism of the thyroid gland and begins to secrete excessive thyroid hormone on its own. This condition is popularly known as toxic goiter. As a result of excessive hormone secretion, systemic signs indicating an accelerated metabolism are observed, such as palpitations while at rest, unexplained weight loss, excessive sweating, irritability, trembling in the hands, and heat intolerance. If you experience any of these symptoms, a medical evaluation is essential to understand the severity of the condition.

Diagnosis: How is it Diagnosed at the Hospital?

When you visit the hospital, the process first begins with a detailed physical examination by the physician. Your doctor will manually examine your neck to check the size, firmness, and structure of the lump, and whether it moves when you swallow. Then, to understand the working status of the gland, TSH, free T3, and free T4 hormone levels in the blood are checked. Thyroid ultrasonography is the clearest method to show the structure of the lump, whether it is solid or fluid-filled inside, its margin regularity, and its exact millimeter size.

Ultrasound is a completely painless imaging method that involves no radiation. If the ultrasound shows that the lump's size is above a certain limit, or if there are suspicious findings such as irregular margins or internal calcification (microcalcification), a fine-needle aspiration biopsy is required. This procedure involves taking cell samples from inside the lump with a fine needle under local anesthesia and is the gold standard in medical practice for ruling out the suspicion of malignant cells. When necessary, especially if the lump secretes excessive hormones, a thyroid scintigraphy is also performed to map whether the lump is producing hormones.

Treatment: Home Care and Treatments Administered at the Hospital

The treatment plan is tailored entirely to the patient based on the results of blood tests, ultrasound findings, and the biopsy. For small lumps that come back benign from the biopsy and do not cause any pressure complaints for the patient, a six-month or annual ultrasound follow-up is usually sufficient. During this monitoring phase, no special medical care at home is required; you are only asked to follow the iodized or non-iodized salt diet recommended by your physician.

If the lump produces excessive hormones, the first step is to try to balance the hormone levels in the blood with medication. In suitable patients, radioactive iodine therapy (atom therapy) aims to shrink the lump and stop its overactivity. Thyroid surgery becomes inevitable if malignant cells are detected in the biopsy, if suspicious cells are seen, or if the lump, despite being benign, grows so much that it presses on the windpipe. Through surgical intervention, part or all of the thyroid gland is safely removed. After surgery, patients are usually discharged within one or two days and can return to their daily lives within about a week. When the entire gland is removed, patients need to take thyroid hormone medication for life.

Complications and Risk Groups

Benign lumps usually remain the same size for years and cause no problems. However, lumps that are not monitored by a physician and continuously grow can eventually put serious pressure on vital organs in the neck region. Pressure on the windpipe can cause shortness of breath during exertion, while pressure on the esophagus can cause a choking sensation when swallowing solid foods. Compression of the nerves leading to the vocal cords by the lump can cause permanent hoarseness.

The most significant medical risk is the development of thyroid cancer. Those who received radiation to the neck region during childhood, those with a history of cancer in first-degree relatives, and new lumps detected in individuals under twenty or over sixty carry a higher risk. Also, although these lumps are rarer in men than in women, when detected in a man, the probability of it being malignant is statistically higher. It is of great importance for individuals in these risk groups to have detailed screenings without delay when they detect a difference in their neck.

When to See a Doctor?

Not ignoring an abnormality when you notice it in your neck is a critical step for early diagnosis. Just like with severe abdominal pain, sudden changes in the neck region should be taken seriously. You should apply to a healthcare facility as soon as possible if you experience any of the following symptoms:

• If you notice a visible or palpable new swelling at the front of your neck
• If an existing swelling has grown rapidly in recent weeks or months
• If you feel a constant catching sensation or pain in your throat when swallowing
• If an unexplained hoarseness in your voice has started, unrelated to a cold
• If the lump in your neck is very hard, immobile, and painful to the touch
• If you have metabolic complaints such as palpitations, excessive sweating, and involuntary weight loss

These symptoms generally require a planned specialist examination. However, if the lump in your neck suddenly grows very fast and completely prevents you from breathing, creates a choking sensation, or makes it impossible to swallow, this situation requires immediate medical intervention. In such a picture of acute respiratory distress, you must call the 112 emergency call center without wasting any time or apply to the emergency room of the nearest hospital.

The Process at BHT CLINIC

In the diagnosis and treatment of thyroid diseases, physician experience is decisive in terms of surgical success and patient safety. At our hospital, patients presenting with a lump in the neck region or thyroid complaints are meticulously evaluated by our specialist physicians. In this process, our General Surgery department works in multidisciplinary harmony with endocrinology and radiology specialists to create the most accurate treatment plan for our patients.

Fine-needle aspiration biopsy is safely performed accompanied by our advanced ultrasonography devices, and pathology results are rapidly reported. In cases requiring surgical intervention, surgeries are performed at high safety standards using special nerve monitoring technologies that protect the vocal cords. For your potential sudden shortness of breath or acute complaints, our emergency department, which provides uninterrupted service twenty-four hours a day, seven days a week, is always by your side. Bringing your old blood tests and neck ultrasound reports, if any, when you come for an examination will help the process move faster. To address your doubts about your health and start a safe treatment process, you can book an appointment to consult with our specialist physicians.

Frequently Asked Questions

Does a thyroid nodule go away on its own?

The vast majority of these lumps do not disappear on their own. Simple cysts that are completely filled with fluid can shrink or rupture over time, but solid structures generally remain the same size or grow slowly. Therefore, regular medical monitoring is essential.

Is a thyroid biopsy painful?

A fine-needle aspiration biopsy generally does not hurt more than a standard blood draw. Very fine-tipped needles are used during the procedure, and because local anesthesia is applied, patients do not feel severe pain. The procedure only takes a few minutes.

Can you get pregnant with a nodule?

Yes, having a lump in the thyroid gland is not an obstacle to getting pregnant. However, due to changing hormone balances during pregnancy, the size of the lump may increase or thyroid functions may be affected. Therefore, women who are planning a pregnancy or are pregnant should have their hormones checked regularly.

Does the voice become hoarse after thyroid surgery?

In surgeries, the nerves leading to the vocal cords pass right behind the thyroid gland. In modern surgeries performed by experienced surgeons and using nerve monitoring (tracking the nerves with a device), the risk of permanent hoarseness is less than 1 percent. Temporary voice changes, on the other hand, resolve in a short time.

What should people with thyroid nodules not eat?

Nutrition changes depending on the structure of the lump and the patient's hormone status. If the person has a toxic goiter, iodized salt and iodine-containing seafood should be avoided. In Hashimoto-related situations, a diet rich in selenium can be beneficial; however, the exact diet must be determined by a physician.

This article is for informational purposes only; please be sure to consult your physician for diagnosis and treatment.