A 55-year-old male with a history of heavy alcohol use presents with retrosternal chest pain and difficulty breathing after repeated episodes of vomiting. Physical examination reveals tachycardia, hypotension, and subcutaneous crepitus. Chest X-ray shows pneumomediastinum, and a diagnosis of Boerhaave syndrome is confirmed. What is the most common location of the esophageal rupture in Boerhaave syndrome?
