Table 5 High-resolution computed tomography findings in hypersensitivity pneumonitis
Stage of disease | References | Sample size | Findings * |
|---|---|---|---|
Acute | Cormier et al. [49] | N = 20 (farmer's lung) | • ground-glass opacities • micronodules • mosaic perfusion • emphysema • honeycombing • mediastinal lymphadenopathis |
Subacute | Hansell et al. [50] | N = 17 (including 9 with pigeon breeder's disease and 4 with farmer's lung) | • generalized increase in attenuation of the lung • nodular pattern • reticular pattern • patchy air space opacification |
|  | Remy-Jardin et al. [51] | N = 21 (pigeon breeder's disease) | • micronodular pattern (< 5 mm in diameter) • ground-glass attenuation • emphysematous changes • honeycombing |
Chronic | Adler et al. [52] | N = 16 (antigen = ?) | • fibrosis • ground-glass attenuation • nodules |
|  | Remy-Jardin et al. [51] | N = 24 (pigeon breeder's disease) | • honeycombing • ground-glass attenuation • micronodules • emphysema |