Correct!
4. The chest radiograph shows tubular opacities in the lower lobes bilaterally

The frontal chest radiograph shows normal lung volumes with a normal heart size, but there are bilateral lower lobe tubular-shaped opacities (Figure 2).

Figure 2. Frontal chest radiography shows bilateral lower lobe faintly seen tubular-shaped opacities (arrows). The heart size, central pulmonary arteries, and lung volumes appear normal.

There is no evidence of architectural distortion, reticulation, or honeycombing- hallmarks of fibrotic lung disease. No evidence of consolidation or cystic change is apparent).

Which of the following is an appropriate consideration among the differential diagnostic possibilities for the appearance of the patient’s chest radiograph?

1. Allergic bronchopulmonary aspergillosis
2. Anomalous systemic arterial supply to the lower lobes
3. Hereditary hemorrhagic telangiectasia
4. Post-infectious bronchiectasis
5. All of the above

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