A 45 year old man who had a right pneumonectomy for a bronchogenic carcinoma about 1 year ago presents with progressive dyspnea. His surgery was uncomplicated. Immediately post-operatively, he had atrial fibrillation that was treated with amiodarone. Since then, he has been improving in function until about 2 months ago when he started getting recurrent pneumonias. He has also noticed increasing shortness of breath and a cough. On physical exam, you note inspiratory stridor. A CT is shown above.
Challenge: What's going on?
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