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A member asked:
Thyroid nodules (hot or cold)? how can you tell which is which?
A doctor has provided 1 answer
Images: "hot" or "cold" is a term related to the appearance on nuclear medicine imaging. A "hot" nodule is one that is too active, and secretes hormone, but benign. A cold nodule takes up less tracer. About 20% of these are malignant, and so they are biopsied. Cysts will also show up cold as they are fluid rather than tissue, so this study should be interpreted along side an ultrasound.
Answered 2/10/2017
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