THE MERCK MANUAL: The Merck Manual of Diagnosis and Therapymultimedia

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  • Hypersensitivity Pneumonitis
  • Chronic Hypersensitivity Pneumonitis

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    Chronic Hypersensitivity Pneumonitis

    High-resolution CT shows findings of fibrosis, including irregular reticulation and traction bronchiectasis. Areas of decreased lung density are compatible with regions of airway obstruction. This combination of findings is suggestive of hypersensitivity pneumonitis.

    Image courtesy of Harold R. Collard, MD.

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