II. Causes
- Similar list of causes as Bronchiolitis Obliterans
- Idiopathic form: Cryptogenic Organizing Pneumonia
III. Presentation
- Slowly resolving Pneumonia over weeks to months
- Consider in unresolved Community Acquired Pneumonia
- May be associated with fever and Sore Throat
IV. Symptoms
- Non-productive cough
- Dyspnea
V. Signs
- Diffuse rales
- Rare Wheezes
VI. Imaging: Chest XRay
- Variable appearance (may be normal)
- Bilateral ground glass, patchy appearance (most common)
- Diffuse nodular pattern
VII. Diagnostics
-
Arterial Blood Gas or Oxygen Saturation
- Hypoxemia in most patients
-
Pulmonary Function Tests
- Restrictive Lung Disease
- DLCO decreased