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</div><div><span>Glomus tympanum tumor</span></div></div>
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</noscript></div><div class="main"><div id="ency_summary"><p>A glomus tympanum tumor is a tumor of the middle ear and bone behind the ear (mastoid).</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>A glomus tympanum tumor grows in the temporal bone of the skull, behind the eardrum (tympanic membrane).</p><p>This area contains nerve fibers (glomus bodies) that normally respond to changes in body temperature or blood pressure.</p><p>These tumors most often occur late in life, around age 60 or 70, but they can appear at any age.</p><p>The cause of a glomus tympanum tumor is unknown. In most cases, there are no known risk factors. Glomus tumors have been associated with changes (mutations) in a gene responsible for the enzyme succinate dehydrogenase (SDHD).</p></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>Symptoms may include:</p><ul><li>Hearing problems or loss</li><li>Ringing or heart beat sounds in the ear (pulsatile <a test="test" href="./003043.htm">tinnitus</a>)</li><li>Weakness or loss of movement in the face (facial nerve palsy) </li></ul></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>Glomus tympanum tumors are diagnosed by a physical exam. They may be seen in the ear or behind the eardrum.</p><p>Diagnosis also involves scans, including:</p><ul><li><a test="test" href="./003330.htm">CT scan</a></li><li><a test="test" href="./003335.htm">MRI scan</a></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>Glomus tympanum tumors are rarely cancerous and do not tend to spread to other parts of the body. However, treatment may be needed to relieve symptoms.</p></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>People who have surgery usually do well. More than 90% of people with glomus tympanum tumors are cured.</p></div></div></section><section><div class="section"><div class="section-header"><div class="section-title"><h2>Possible Complications</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>The most common complication is hearing loss.</p><p>Nerve damage, which may be caused by the tumor itself or damage during surgery, rarely occurs. Nerve damage can lead to <a test="test" href="./003028.htm">facial paralysis</a>.</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-7" role="button" title="Expand/Collapse section"><span class="icon icon-section-action">
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</div></div><div class="section-body" id="section-7"><p>Contact your health care provider if you notice:</p><ul><li>Difficulty with hearing or swallowing</li><li>Problems with the muscles in your face</li><li>Pulsing sensation in your ear</li></ul></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>Paraganglioma - glomus tympanum</p></div></div></section><section><div class="section"><div class="section-header"><div class="section-title"><h2>References</h2></div><div class="section-button"><button type="submit" aria-controls="section-Ref" role="button" title="Expand/Collapse section"><span class="icon icon-section-action">
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</div></div><div class="section-body" id="section-Ref"><p>Gubbels SP, Hartl RB, Crowson MG, Jenkns HA, Marsh M. Temporal bone neoplasms and lateral cranial base surgery. In: Flint PW, Francis HW, Haughey BH, et al, eds. <em>Cummings Otolaryngology: Head and Neck Surgery. </em>7th ed. Philadelphia, PA: Elsevier; 2021:chap 178.</p><p>Rucker JC, Seay MD. Cranial neuropathies. In: Jankovic J, Mazziotta JC, Pomeroy SL, Newman NJ, eds. <em>Bradley and Daroff's Neurology in Clinical Practice.</em> 8th ed. Philadelphia, PA: Elsevier; 2022:chap 103.</p><p>Verlicchi A, Nicolato A, Valvassori, L, De Donato G, Zanotti B. Head and neck paragangliomas. In: Winn HR, ed. <em>Youmans and Winn Neurological Surgery.</em> 8th ed. Philadelphia, PA: Elsevier; 2023:chap 181.</p></div></div></section>
<section><div class="section"><div class="section-header"><div class="section-title"><h2>Review Date 12/31/2023</h2></div><div class="section-button"><button type="submit" aria-controls="section-version" role="button" title="Expand/Collapse section"><span class="icon icon-section-action">
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<div id="section-version" class="section-body"><p>Updated by: Josef Shargorodsky, MD, MPH, Johns Hopkins University School of Medicine, Baltimore, MD. Also reviewed by David C. Dugdale, MD, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team. </p>
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