Fig. 14. Fibrotic hypersensitivity pneumonitis in a farmer. Fibrotic non-contrast expiratory axial (A, B) and coronal (C) images in lung windows show mid to lower-lobe-predominant fibrosis with reticulation, cystic change, patchy ground-glass opacities, and lobular regions of air trapping. All arrows are pointing towards lobular air trapping.
