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</div><div><span>Thyroid nodule</span></div></div>
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</a><h1 class="with-also" itemprop="name">Thyroid nodule</h1>
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</noscript></div><div class="main"><div id="ency_summary"><p>A thyroid nodule is a growth (lump) in the thyroid gland. The thyroid gland is located at the front of the neck, just above where your collarbones meet in the middle.</p></div><section><div class="section"><div class="section-header"><div class="section-title"><h2>Causes</h2></div><div class="section-button"><button type="submit" aria-controls="section-1" role="button" title="Expand/Collapse section"><span class="icon icon-section-action">
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</div></div><div class="section-body" id="section-1"><p>Thyroid nodules are caused by an overgrowth of cells in the thyroid gland. These growths can be: </p><ul><li>Not cancer (<a test="test" href="./002236.htm">benign</a>), thyroid cancer (malignant), or very rarely, other cancers or infections</li><li>Fluid-filled (cysts)</li><li>One nodule or a group of small nodules</li><li>Producing thyroid hormones (hot nodule) or not making thyroid hormones (cold nodule)</li></ul><p>Thyroid nodules are very common. They occur more often in women than in men. A person's chance of getting a thyroid nodule increases with age.</p><p>Only a few thyroid nodules are due to <a test="test" href="./001213.htm">thyroid cancer</a>. A thyroid nodule is more likely to be cancer if you:</p><ul><li>Have a hard nodule</li><li>Have a nodule that is stuck to nearby structures</li><li>Have a family history of thyroid cancer</li><li>Have noticed a change in your voice</li><li>Are younger than 20 or older than 70</li><li>Have a history of radiation exposure to the head or neck</li><li>Are male</li></ul><p>Causes of thyroid nodules are not always found, but can include:</p><ul><li><a test="test" href="./000371.htm">Hashimoto disease</a> (a reaction of the immune system against the thyroid gland)</li><li>Lack of iodine in the diet </li></ul></div></div></section><section><div class="section"><div class="section-header"><div class="section-title"><h2>Symptoms</h2></div><div class="section-button"><button type="submit" aria-controls="section-2" role="button" title="Expand/Collapse section"><span class="icon icon-section-action">
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</div></div><div class="section-body" id="section-2"><p>Most thyroid nodules do not cause symptoms.</p><p>Large nodules can press against other structures in the neck. This can cause symptoms such as:</p><ul><li>
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A visible <a test="test" href="./001178.htm">goiter</a> (enlarged thyroid gland)</li><li>
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Hoarseness or changing voice
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</li><li>Pain in the neck</li><li>
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Problems breathing, especially when lying down flat</li><li><a test="test" href="./007543.htm">Problems swallowing</a> food</li></ul><p>Nodules that produce thyroid hormones will likely cause symptoms of an <a test="test" href="./000356.htm">overactive thyroid gland</a>, including:</p><ul><li>Warm, sweaty skin</li><li>Fast pulse and palpitations</li><li>Increased appetite</li><li>Nervousness or anxiety</li><li>Restlessness or poor sleep</li><li>Skin blushing or flushing</li><li>More frequent bowel movements</li><li><a test="test" href="./003192.htm">Tremor</a></li><li><a test="test" href="./003107.htm">Weight loss</a></li><li>Irregular or lighter menstrual periods</li></ul><p>Older people with a nodule that produces too much thyroid hormone may have only vague symptoms, including:</p><ul><li>Fatigue</li><li>Palpitations</li><li>Chest pain</li><li>Memory loss</li></ul><p>Thyroid nodules are sometimes found in people who have Hashimoto disease. Hashimoto disease may cause symptoms of an underactive thyroid gland, such as:</p><ul><li>Constipation</li><li>Dry skin</li><li><a test="test" href="./003105.htm">Face swelling</a></li><li><a test="test" href="./003088.htm">Fatigue</a></li><li>Hair loss</li><li>Feeling cold when other people do not</li><li><a test="test" href="./003084.htm">Weight gain </a></li><li>Irregular menstrual periods</li></ul><p>Very often, thyroid nodules produce no symptoms. Health care providers often find thyroid nodules during a routine physical exam or imaging tests that are done for another reason. A few people have thyroid nodules that are big enough that they notice the nodule on their own and ask their provider to examine their neck.</p></div></div></section><section><div class="section"><div class="section-header"><div class="section-title"><h2>Exams and Tests</h2></div><div class="section-button"><button type="submit" aria-controls="section-3" role="button" title="Expand/Collapse section"><span class="icon icon-section-action">
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</div></div><div class="section-body" id="section-3"><p>If your provider finds a nodule or you have symptoms of a nodule, the following tests may be done:</p><ul><li><a test="test" href="./003684.htm">TSH level</a> and other thyroid blood tests</li><li><a test="test" href="./003776.htm">Thyroid ultrasound</a></li><li><a test="test" href="./003829.htm">Thyroid scan</a> (nuclear medicine)
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</li><li><a test="test" href="./003899.htm">Fine needle aspiration biopsy</a> of the nodule or of multiple nodules (sometimes with special genetic testing on the nodule tissue)</li></ul></div></div></section><section><div class="section"><div class="section-header"><div class="section-title"><h2>Treatment</h2></div><div class="section-button"><button type="submit" aria-controls="section-4" role="button" title="Expand/Collapse section"><span class="icon icon-section-action">
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</div></div><div class="section-body" id="section-4"><p>Your provider may recommend <a test="test" href="./002933.htm">surgery to remove all or part of your thyroid gland</a> if the nodule is:</p><ul><li>Due to thyroid cancer</li><li>Causing symptoms such as swallowing or breathing problems</li><li>Biopsied and the biopsy is inconclusive, and your provider can't tell whether the nodule is a cancer</li><li>Making too much thyroid hormone</li></ul><p>People with nodules that are making too much thyroid hormone may be treated with radioiodine therapy. This reduces the size and activity of the nodule. Pregnant women or women who are still breastfeeding are not given this treatment. </p><p>Both surgery to remove thyroid gland tissue and radioactive iodine treatment can cause lifelong <a test="test" href="./000353.htm">hypothyroidism</a> (underactive thyroid). This condition needs to be treated with thyroid hormone replacement (a daily medicine).</p><p>For noncancerous nodules that do not cause symptoms and are not growing, the best treatment may be:</p><ul><li>Careful follow-up with a physical exam and <a test="test" href="./003336.htm">ultrasound</a></li><li>A thyroid biopsy repeated 6 to 12 months after diagnosis, especially if the nodule has grown </li></ul></div></div></section><section><div class="section"><div class="section-header"><div class="section-title"><h2>Outlook (Prognosis)</h2></div><div class="section-button"><button type="submit" aria-controls="section-5" role="button" title="Expand/Collapse section"><span class="icon icon-section-action">
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</div></div><div class="section-body" id="section-5"><p>Noncancerous thyroid nodules are not life threatening. Many do not require treatment. Follow-up exams are enough. </p><p>The outlook for thyroid cancer depends on the type of cancer. For the most common kinds of thyroid cancer, the outlook is very good after treatment.</p></div></div></section><section><div class="section"><div class="section-header"><div class="section-title"><h2>When to Contact a Medical Professional</h2></div><div class="section-button"><button type="submit" aria-controls="section-6" role="button" title="Expand/Collapse section"><span class="icon icon-section-action">
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</div></div><div class="section-body" id="section-6"><p>Contact your provider if you feel or see a lump in your neck, or if you have any symptoms of a thyroid nodule.</p><p>If you have been exposed to radiation in the face or neck area, contact your provider. A neck ultrasound can be done to look for thyroid nodules.</p></div></div></section><section><div class="section"><div class="section-header"><div class="section-title"><h2>Alternative Names</h2></div><div class="section-button"><button type="submit" aria-controls="section-Alt" role="button" title="Expand/Collapse section"><span class="icon icon-section-action">
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</div></div><div class="section-body" id="section-Alt"><p>Thyroid adenoma - nodule; Thyroid carcinoma - nodule; Thyroid cancer - nodule; Thyroid incidentaloma; Hot nodule; Cold nodule; Thyrotoxicosis - nodule; Hyperthyroidism - nodule</p></div></div></section><section><div class="section sec-mb"><div class="section-header"><div class="section-title"><h2>Patient Instructions</h2></div><div class="section-button"><button type="submit" aria-controls="section-carepnt" role="button" title="Expand/Collapse section"><span class="icon icon-section-action">
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</div></div><div name="Patient Instructions" class="section-body" id="section-carepnt"><ul class="side-nav"><li><a href="../patientinstructions/000293.htm">Thyroid gland removal - discharge</a></li>
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</div></div><div class="section-body" id="section-Ref"><p>Haugen BR, Alexander EK, Bible KC, et al. 2015 American Thyroid Association management guidelines for adult patients with thyroid nodules and differentiated thyroid cancer: The American Thyroid Association Guidelines Task Force on Thyroid Nodules and Differentiated Thyroid Cancer. <em>Thyroid</em>. 2016;26(1):1-133. PMID: 26462967 <a href="https://pubmed.ncbi.nlm.nih.gov/26462967/" target="_blank">pubmed.ncbi.nlm.nih.gov/26462967/</a>.</p><p>Paschke R, Eszlinger M, Kopp P. Euthyroid and hyperthyroid nodules and goiter. In: Robertson RP, ed. <em>DeGroot's Endocrinology</em>. 8th ed. Philadelphia, PA: Elsevier; 2023:chap 77.</p><p>Pearce EN, Hollenberg AN. Thyroid. In: Goldman L, Cooney KA, eds. <em>Goldman-Cecil Medicine</em>. 27th ed. Philadelphia, PA: Elsevier; 2024:chap 207.</p></div></div></section>
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