Mediastinal lymphadenopathy predominates in the anterior mediastinum and the paratracheal regions. When lymphadenopathy involves the hilar regions, it is usually asymmetric. Primary tuberculosis ...

Follow-up radiographs in 1995 and 1996 demonstrated progression of the mediastinal and hilar adenopathy, followed by spontaneous regression in 1997. Figure 4 is a chest radiograph obtained 3 years ...