Diagnosis of Hypersensitivity Pneumonitis in Adults
Key Points
Key Points
- Hypersensitivity pneumonitis (HP) must be considered in the differential diagnosis for patients with newly identified interstitial lung disease (ILD).
- This guideline committee categorized HP into two clinical phenotypes—nonfibrotic and fibrotic HP—and made separate recommendations for each.
- makes no recommendation or suggestion for or against the use of a questionnaire to identify potential HP inciting agents and sources. Instead, the guideline committee recommends development and validation of a questionnaire.Remark: Pending the availability of a validated questionnaire, the guideline committee advocates that clinicians take a thorough history to identify potential exposures and sources in the patient's environment that are known to be associated with HP.
- makes no recommendation or suggestion for or against the use of a questionnaire to identify potential HP inciting agents and sources. Instead, the guideline committee recommends development and validation of a questionnaire.
Remark: Pending the availability of a validated questionnaire, the guideline committee advocates that clinicians take a thorough history to identify potential exposures and sources in the patient’s environment that are known to be associated with HP.
Diagnosis
Diagnosis
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For patients with newly identified I...
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...or patients with newly identified ILD whose diffe...
...urces of Antigens Known to Cause HPHavi...
...Recommended Chest HRCT Scanning P...
...le 3. Radiological Terms for Heterogen...
...e 4. Chest HRCT Scan Features of the Nonfibroti...
...“Typical hypersensitivity pneumon...
...nonfibrotic typical HP pattern is characterized b...
...RCT Scan Features of the Fibrotic HP PatternHa...
...gure 2. Three-density Pattern...
...esolution computed tomography (A) inspirator...
.... Histopathological Criteria for the Diagnosis...
...cal Lung biopsy Specimen from a Patient w...
...Low-magnification photomicrograph showing p...
...e 4. (A–C) Poorly Formed Granulomas Charac...
...agnification photomicrograph illustrating i...
...5. Photomicrographs of Surgical Lung Bio...
...g magnification view showing multiple sections...
...ypersensitivity Pneumonitis Diagnosis...
...7. Diagnostic Evaluation of Possible Hyper...