Table 1

Clinical features of pneumonia and BOOP

Clinical featuresPneumoniaBOOP
BOOP, bronchiolitis obliterans and organising pneumonia.
Dyspnoea++++
Cough+ Purulent+ Often non-productive or mucoid
OnsetOften rapid <6 daysInsidious often >6 days
Fever++
Crackles++
Chest radiographLobar/unilateralOften bilateral blotchy shadows
Extrapulmonary featuresEspecially with atypical, pneumonia—for example, headache, gastrointestinal disturbanceNone