10-year Autoimmune (hashimoto) Thyroiditis in Medicine / Internal Medicine — 62yo Man | Endocrinology | SMLE Q#3073
SMLE Question #3073
Medicine / Internal Medicine
Endocrinology
Objective: OBJ-ADDISON-DOSE-1
Last updated: February 2026
A 62-year-old man with a 10-year history of autoimmune (Hashimoto) thyroiditis reports that a previously stable right thyroid nodule has rapidly enlarged over the past 4 weeks with new neck fullness. Examination shows a firm, asymmetric enlargement of the right thyroid lobe with mild tenderness and no overlying skin changes. He has no hoarseness or dysphagia. Thyroid function tests done 2 months ago were within the reference range. What is the most likely diagnosis?
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