Correct!
4. The chest radiograph shows linear right lower lobe opacity suggesting scarring

The frontal chest radiograph shows linear right lower lobe opacity with some architectural distortion and volume loss, consistent with scarring, but without similar findings in the left lung base to suggest a more widespread fibrotic process. The right hilum also appears prominent. Miliary nodules are not seen. The left upper lobe is well-aerated- there is no evidence of collapse, which would be suggested by hazy left upper thoracic opacity obscuring the left cardiac border associated with decreased left lung volume.

A comparison chest radiograph from three years earlier (Figure 2) was located.

Figure 2. A: Frontal chest radiography performed three years earlier. B: Most recent chest radiography for comparison.

Which of the following statements regarding the chest radiograph is most accurate? (Click on the correct answer to proceed to the third of nine pages)
  1. The comparison chest radiograph appears normal
  2. The comparison chest radiograph shows a right-sided pneumothorax
  3. The comparison chest radiograph shows bilateral lower lobe consolidation
  4. The comparison chest radiograph shows the linear right lower lobe opacity suggesting scarring and is new from the presentation chest radiograph
  5. The comparison chest radiograph shows the same linear right lower lobe opacity suggesting scarring and is unchanged from the presentation chest radiograph

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