Correct!
5. The chest radiograph shows symmetric, basal predominant fine linear and reticular abnormalities without architectural distortion
The frontal chest radiograph shows normal lung volumes. A fine linear and reticular pattern is present in a symmetric fashion affecting the mid and lower lungs bilaterally (Figure 2).
Figure 2. Focused detail image of the right lower lobe shows the radiographic abnormalities to advantage
No pleural effusion or lymphadenopathy is present and the mediastinal contours appear normal. While there are basal linear opacities, there are no features of fibrosis, such as architectural distortion, coarse linear and reticular opacities, traction bronchiectasis, and volume loss. While a small, calcified right base subpleural nodule is present, there is no evidence of numerous, bilateral, small nodules to suggest a miliary pattern. No evidence of ground-glass opacity or consolidation is seen. Basal predominant linear opacities are evident, but their appearance is not suggestive of bronchiectasis- no “tram-tracks” (dilated, thick-walled bronchi seen in longitudinal section) or cystic “ring shadows” (dilated, thick-walled bronchi seen in cross section) are evident.
Which of the following is the least appropriate consideration among the differential diagnostic possibilities for the appearance of the patient’s chest radiograph? (Click on the correct answer to proceed to the next panel)