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What is a hypoechoic nodule?

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Quick Answer

A hypoechoic nodule is an abnormal growth, usually spherical, on the surface of body tissues or in a organ, that reflects little or no ultrasound, according to CCM Health. These growths are commonly found in the thyroid.

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Between 5 and 10 percent of all palpable nodules in the thyroid turn out be malign, states Cancer Network. They can appear as single growths or clusters of smaller nodules and can be fluid-filled or hard. The latter type is more likely to be cancerous, according to Everyday Health. If a doctor finds the nodule to be suspicious, he performs a biopsy test.

Large nodules can require surgical removal even if they are benign, either because they cause discomfort in swallowing or because they produce hormones, according to Everyday Health.

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