A 65-year-old man who has a long history of hypeension presents to the emergency depament with tearing chest pain that radiates to the back. An electrocardiogram is normal, as are cardiac enzymes. A “stat” chest radiograph demonstrates widening of the mediastinum. Which of the following is the most likely?

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Vikas Bhardwaj
Medical Technologist, AIIMS New Delhi
Updated: Apr 17, 2026