A 61-year-old man has a 1.5-cm thyroid nodule with a solid markedly hypoechoic appearance, irregular margins and punctate echogenic foci on ultrasound. His TSH is 1.8 mIU/L (0.4–4.0), and there is no cervical lymphadenopathy. What is the most appropriate next step?
Keep going — a set of ten like this one, one at a time.
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