1 MCQs in Medicine for NEET PG
A 32-year-old woman presents to the endocrinology clinic with a 4-month history of unintentional weight loss, heat intolerance, palpitations, fine tremor, and proximal muscle weakness. On examination, she has a diffusely enlarged smooth goiter with an audible bruit, irregular heart rate of 122 bpm, and prominent eyes. The structure marked **A** in the diagram shows bilateral exophthalmos measured at 24 mm by Hertel exophthalmometry. Laboratory studies reveal suppressed TSH, markedly elevated free T4 and free T3, and positive TSI. Which of the following best explains the pathophysiology of the exophthalmos marked **A** in this patient?
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