Correct!
1. The frontal chest radiograph appears normal

The frontal chest radiograph performed 4 years prior to Figure 1 appears normal. There is no evidence of lymph node enlargement of pleural abnormalities.

Enhanced thoracic CT (Figure 3) was performed for evaluation of the abnormalities detected at presentation chest radiography.

Figure 3. Representative static enhanced thoracic CT displayed in lung (A-I) and soft tissue (J-O) windows. Movie of thoracic CT scan in lung windows (lower left) and soft tissue windows (lower right).

Which of the following statements regarding this CT examination is most accurate? (Click on the correct answer to proceed to the next panel)

1. The thoracic CT shows interlobular septal thickening, pleural and pericardial effusions, and lung nodules
2. The thoracic CT shows non-septal linear opacities associated with architectural distortion, consistent with fibrotic lung disease
3. The thoracic CT shows numerous small nodules, consistent with a “miliary” pattern, as well as mediastinal lymph node enlargement and pleural effusion
4. The thoracic CT shows small perilymphatic nodules suggesting sarcoidosis
5. The thoracic CT shows unilateral linear opacities and traction bronchiectasis consistent with prior post-inflammatory scarring

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