Correct!
4. Thoracic CT scan
The portable AP of the chest shows a widened mediastinum (> 6 cm on upright chest x-ray). The next appropriate test would be a thoracic CT scan to evaluate the mediastinum (Figure 3).
Figure 3. Representative images from the contrast-enhanced thoracic CT scan in soft tissue windows.
Which of the following should be done next? (Click on the correct answer to proceed to the fourth of five panels)