Typical HRCT imaging findings in bronchiolitis obliterans

(A) Inspiratory CT demonstrates bilateral areas of decreased attenuation and vascularity resulting in a mosaic pattern.

(B) The mosaic pattern is accentuated on the expiratory CT due to air trapping.

CT: computed tomography; HRCT: high-resolution computed tomography.

Courtesy of Nestor L Muller, MD, PhD.

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