Representative serial axial images of a noncontrast CT scan of the chest for case 2. (A) Axial CT image, showing peribronchovascular consolidations and ground-glass opacities in the right upper lobe. (B) Image showing a complete resolution of radiographic abnormalities after escalating prednisone to 1 mg/kg per day and reinitiation of mycophenolate mofetil. (C) Image showing reappearance of ground-glass opacities with peribronchovascular consolidations in the right upper lobe when the prednisone was tapered to 10 mg/d and positive cytomegalovirus PCR in BAL. Notably, lung findings appear similar to panel A, when his HCT-OP was initially diagnosed.