A 42-year-old female smoker with a 20-pack-year history is admitted with progressive shoness of breath. On exam, she has distant hea sounds with decreased breath sounds on lung exam bilaterally. No summation gallop is heard. ECG shows low voltage. Chest x-ray is shown in. The findings on the CXR may be associated with
Positional change of chest x-ray findings Pericardial rub on auscultation Hamman's crunch on physical exam "Continuous diaphragm" sign on CXR