How Do Doctors Diagnose Thyroid Nodules?

This often requires a thyroid ultrasound, a thyroid scan, and/or an ultrasound guided fine needle aspiration biopsy. This is a test during which the doctor uses a small needle to take a sample of the nodule and checks it under a microscope. Additional blood tests and imaging studies may be necessary, particularly if the nodule is cancerous.

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Rev. 11/2019. MassGeneral Hospital for Children and Massachusetts General Hospital do not endorse any of the brands listed on this handout. This handout is intended to provide health information so that you can be better informed. It is not a substitute for medical advice and should not be used to treatment of any medical conditions.