Thyroid Disorders USMLE Step 1 Practice Question
A 29-year-old woman presents 3 months postpartum with palpitations, anxiety, and tremor (HR 108/min, BP 138/82, RR 18, T 37.2°C). Several weeks later, she develops fatigue and cold intolerance despite normal appetite. Examination reveals a small, nondtender thyroid without nodules. TSH is 0.2 mIU/L with elevated free T4. Radioactive iodine uptake is low. She denies recent iodine supplementation or medication use. Which diagnosis best explains her clinical presentation?
Answer choices
- APostpartum thyroiditisCorrect answer
- BMedullary thyroid carcinoma
- CToxic adenoma
- DGraves disease
- ESubacute granulomatous thyroiditis
- FThyroid hormone factitious ingestion
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