Our patient had prominent signs of systemic illness (14,000/μL leukocytes, temperature of 38.4°C, etc), whereas Matsuse et al5
noted that patients with DAB very often demonstrated peripheral leukocyte counts < 10,000/μL, and also the majority of these patients were afebrile.5
Even on radiographic grounds, our patient cannot be considered as having DAB: a chest radiograph in DAB shows diffuse small nodular shadows,5–
whereas in our patient chest radiography clearly demonstrated bilateral upper-lobe infiltrates. Consolidation is rare or not a major finding in patients with DAB, and also areas of hyperlucency are usually seen on the chest radiograph. More convincingly, CT scan of the chest in DAB patients revealed small, round opacities located around the end of the bronchovascular branchings in almost all of the lung fields, findings that resemble panbronchiolitis.6
In our patient, chest CT did not detect this diffusely disseminated nodular shadows seen in DAB.