Correct!
4. The repeat thoracic CT shows interval enlargement of the left lower lobe cavity
There is no pleural abnormality and, while some patchy areas of faint ground-glass opacity are present, particularly in the right upper and lower lobes (possibly reflecting areas of aspirated blood given the hemoptysis) no evidence of new randomly distributed bilateral small solid nodules to suggest development of a hematogenous infectious process is seen.). The left lower lobe cavity has enlarged since the CT performed one week earlier (Figure 2). However, there is no evidence of solid internal opacity within the cavity to indicate development of mycetoma.
Based on the data thus far, which of the following represents the next most appropriate step for the evaluation of this patient? (Click on the correct answer to proceed to the seventh of eight panels)