Correct!
4. The chest radiograph shows cardiomegaly and small pleural effusions

The chest radiograph shows a mildly enlarged heart with small symmetric pleural effusions.  No evidence of small pulmonary nodules is seen and no mass is present. The pulmonary vascularity appears normal and symmetric, and no features to suggest fibrotic lung disease are present.

The patient’s laboratory data was largely normal, aside from an elevated erythrocyte sedimentation rate of 58 mm/hr, (normal, 0-22 mm/hr) and a markedly elevated C-reactive protein of 106.5 mg/dL, (normal ˂1 mg/dL). The patient’s physicians felt the patient’s presentation was most suggestive of an infectious illness. The patient subsequently underwent enhanced thoracic CT (Figure 2).

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Figure 2. Upper six panels: Representative images from the axial enhanced thoracic CT. The right atrium (RA) and right ventricle (RV) both appear mildly enlarged. Lower panel: Video of thoracic CT scan in soft tissue windows.

Which of the following is the regarding the thoracic CT is most accurate? (Click on the correct answer to proceed to the thrid of five panels)

  1. Thoracic CT shows a saccular thoracic aortic aneurysm
  2. Thoracic CT shows bilateral pulmonary emboli
  3. Thoracic CT shows diffuse soft tissue infiltration of the mediastinum
  4. Thoracic CT shows lytic lesions involving the osseous structures of the thorax
  5. Thoracic CT shows pleural effusions and pericardial effusions or thickening

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