Correct!
1. CT shows a focal nodular opacity with air bronchogram formation
Thoracic CT shows a focal, nodular opacity in the right lower lobe with several air bronchograms, correlating with the findings seen at chest radiography. The visualized airways are normal; no bronchiectasis is present. No small nodules are present, nor is diffuse ground-glass opacity seen. Three is no evidence of reticulation or linear opacity to suggest the presence of fibrotic lung disease.
The patient underwent upper endoscopy and colonoscopy and endoscopic retrograde cholangiopancreatography, which did not disclose specific abnormalities.
Which of the following is the most appropriate next step for the evaluation of this patient? (Click on the correct answer to proceed to the fifth of seven pages)