1 MCQs in Medicine for NEET PG
A 52-year-old woman presents with progressive dyspnea and neck swelling for 6 months. On examination, when her arms are raised above her head, she develops facial plethora (marked **A** in the diagram), along with jugular venous distension and inspiratory stridor. Her thyroid is enlarged at the base of the neck. Which of the following best explains the mechanism of the positive Pemberton sign in this patient?
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