CT imaging compatible with fibrotic hypersensitivity pneumonitis

Inspiratory high-resolution CT (A) shows mild left and minimal right peripheral reticulation, extensive ground-glass and subtle mosaic pattern. Expiratory image (B) demonstrates multilobar lobular air-trapping.

CT: computed tomography; HP: hypersensitivity pneumonitis.

Courtesy of Nestor Muller, MD.

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