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Do all thyroid nodules require fine needle aspiration biopsy?

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Do all thyroid nodules require fine needle aspiration biopsy?

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No. As a general rule, thyroid nodules less than 1 cm (approximately ½ inch) can be followed with observation without the need for fine needle aspiration. These small nodules are often found incidentally on CT, MRI or neck ultrasound done for some other reason. They are very common and are rarely thyroid cancer. Therefore, in the absence of other high risk features, these small nodules are usually observed with a repeat thyroid ultrasound in 6-12 months reserving biopsy for those few nodules that increase in size over time.

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