1. a) High-resolution computed tomography shows innumerable ill-defined centrilobular ground-glass opacity nodules, characteristic of sub-acute hypersensitivity pneumonitis.
a) High-resolution computed tomography shows innumerable ill-defined centrilobular ground-glass opacity nodules, characteristic of sub-acute hypersensitivity pneumonitis. Note that there are also foci of relative sparing associated with air trapping. b) Evidence of fibrosis with irregular reticular opacities, traction bronchiectasis and architectural distortion in chronic hypersensitivity pneumonitis. A large cyst is present in the lower right lobe.
S. Harari, and A. Caminati Eur Respir Rev 2010;19:97-108
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