Upon re-admission, a review of systems revealed the presence of mild dyspnea on exertion, accompanied by a slightly productive cough. Of interest was the fact that the patient had had a positive PPD test for the past 4 to 5 years, but this had never been evaluated. At this time, physical and laboratory examinations were unremarkable. Radiographic examination of the chest revealed a 2 x 2-cm density in the right lower lung field. A CT scan revealed several small cavities in this area.

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