Correct!
4. None of the above
Frontal chest radiography shows normal heart size and clear lungs. No mediastinal or peribronchial lymphadenopathy is evident. No pulmonary nodules are seen. The frontal chest radiograph was prospectively interpreted as negative but the image is abnormal. Closely review Figure 1.
Which structure(s) is/are abnormal? (Click on the correct answer to be directed to the third of 11 pages)