Correct!
2. Bronchiectasis
The large lung volumes and lack of basal predominant, subpleural linear and reticular opacities excludes usual interstitial pneumonia / idiopathic pulmonary fibrosis as a diagnostic consideration. Disseminated infection typically presents on chest radiography as multiple variably-sized nodules, sometimes “miliary” in appearance, possibly with other infiltrative abnormalities, such as consolidation, none of which are seen on this chest radiograph. An aspirated foreign body may be radiographically occult, or may appear as focal increased lucency within a portion of a lung or affecting the entire lung, resulting from endobronchial obstruction with air trapping distal to the point of obstruction. Occasionally the foreign body itself may be visible, if it is radiopaque. Lymphoma manifestations within the thorax are protean, but commonly include mediastinal lymph node enlargement, possibly hilar lymphadenopathy as well, or single or multiple pulmonary nodules or masses, with or without pleural effusion- none of these findings are evident. The large lung volumes and curvilinear opacities suggesting the possibility of pulmonary cysts raises the possibility of various causes of cystic lung disease, including bronchiectasis.
The patient underwent thoracic CT (Figure 3) for further characterization of the chest radiographic findings.
Figure 3. Representative axial thoracic CT images displayed in lung windows.
Which of the following statements regarding this CT examination is most accurate? (Click on correct answer to proceed to the next panel)