A 10-year-old boy presented with an abnormal chest x-ray finding. He was asymptomatic with no history of any underlying disease or exposure to tuberculosis. Examination Normal appearance Minimally reduced lung sounds in the left lower lung field, without definite crackles or wheezing Chest x-ray revealed a solitary, irregularly shaped consolidation in the left lower lobe.
Contrast-enhanced chest computed tomography (CT) revealed a ground-glass opacity in the left lower lobe without hilar or mediastinal lymphadenopathy. Tests for tuberculosis: All negative except interferon-gamma releasing assay Blood tests including cell count, erythrocyte sedimentation rate, C-reactive protein, hepatic and renal function tests, and anti-mycoplasma antibody, were within the normal range. Follow-up chest CT scans performed at 4 and 6 months after the first visit showed the migration of the ground-glass…
