Correct!
1. The frontal chest radiograph shows continued right pleural effusion and right lower lobe volume loss.
Frontal chest radiograph shows continued right pleural effusion and right lower lobe volume loss. The right pleural effusion has decreased in size compared with the previous chest radiograph (Figure 4), but it persists nonetheless. The heart size is normal, and features that suggest hydrostatic pulmonary edema, such as interlobular septal thickening, airway thickening, cardiomegaly, and vascular enlargement and indistinctness, are absent. There is no evidence of pneumoretroperitoneum, and no pulmonary nodules or new air-space opacities have developed.
Which of the following represents the next most appropriate step for the evaluation of this patient? (Click on the correct answer to proceed to the fifth of seven panels)