Correct!
1. The frontal chest radiograph shows a poorly defined opacity in the extreme right base

The frontal chest radiograph shows faintly seen, poorly defined opacity in the inferior right thorax. This abnormality is difficult to appreciate, but note the relatively increased opacity seen “through” the right diaphragm, obscuring the vessels that should normally be visualized in this region. For example, compare the right base to the left base- note how branching vessels can be “seen through” the left diaphragm, but not nearly as well on the right.

As part of the evaluation of her abdominal complaints, the patient underwent enhanced abdominal CT. The lung bases and upper abdomen portions of this study are shown in Figure 2.

Figure 2. Axial abdominal CT images obtained during the evaluation of suspected pancreatic insufficiency.

Regarding this examination, which of the following is correct? (Click on the correct answer to proceed to the third of nine panels)

1. The abdominal CT shows a destructive right-sided chest wall mass
2. The abdominal CT shows a large right pleural effusion
3. The abdominal CT shows a posterior mediastinal mass
4. The abdominal CT shows a vascularized right base mass
5. The abdominal CT shows intrathoracic herniation of right-sided posterior subdiaphragmatic structures

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