Correct!
5. All of the above
Any of the above entities could present with peripheral opacities on chest radiography. Bronchopneumonia is not typically peripherally predominant, but it is such a common clinical entity that an uncommon, or even frankly rare, manifestation will occasionally be encountered. Several of the idiopathic interstitial pneumonias may present with peripheral opacities. Usual interstitial pneumonia / idiopathic pulmonary fibrosis commonly presents with peripheral or frankly subpleural opacities, although such opacities are usually basal predominant; the same is true of non-specific interstitial pneumonia. Organizing pneumonia, either cryptogenic or secondary, classically presents with peripheral or frankly subpleural opacities, often consolidation, on chest radiography. Chronic eosinophilic pneumonia also characteristically presents with peripheral opacities on chest radiography and thoracic CT. Aspiration also frequently involves the peripheral and subpleural lungs, although the peripheral location is often noted in the context of a dependent distribution as well.
The patient underwent routine thoracic CT (Figure 2) for further characterization of the abnormalities seen at chest radiography.
Figure 2. Panels A-D (left). Representative static images from routine thoracic CT scan. Panels E-J (right). Selected static axial images from the high-resolution thoracic CT scan.
Which of the following statements regarding this CT examination is most accurate?