A 90-year-old man with a-fib and dementia presents with sudden dyspnea. Explore classic Chest Radiograph findings that point to a life-threatening diagnosis.
A 90-year-old man with atrial fibrillation and dementia presented to the hospital with sudden onset of dyspnea that had begun 1 hour earlier. Before admission, he had not been taking anticoagulation therapy on the basis of discussions of his preferences with his primary care physician. Physical examination was notable for tachypnea and tachycardia. On chest radiography, the pulmonary vasculature was not visible in the right lung fields. In addition, the right descending pulmonary artery was enlarged. What diagnosis is suggested by these chest radiograph appearances?
What is the most likely diagnosis?
Atrial fibrillation, CT Pulmonary Angiography, Dyspnea, Pulmonary embolism, Westermark’s sign
