Last updated on: May 12th, 2022

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Thyroid disorders 1

A 45-year-old woman with a history of smoking and type 2 diabetes mellitus on metformin comes to the physician because of a 4-month history of shortness of breath and increased appetite. She has lost 5 kg of weight without dieting or increasing exercise. She is compliant with her medications. Physical exam shows a blood pressure of 153/86 mmHg, heart rate of 105 bpm, exophthalmos, and pretibial myxedema. An ultrasound of the thyroid fails to reveal any nodules. Which of the following is the most likely diagnosis?