An incorrect diagnosis and an unexpected cause of respiratory failure.

Thoracic aortic aneurysms often are asymptomatic or cause nonspecific symptoms such as cough, dyspnea, wheezing, or dysphagia. Acute onset of severe chest, neck, back, or abdominal pain may indicate an aortic rupture or dissection. Early identification and treatment, including optimized medical management and evaluation for surgical intervention, are necessary to improve patient outcomes.