9 results
Approach to the diagnosis of chronic hypersensitivity pneumonitis. 
*Consider additional test: bronchoscopy with bronchoalveolar lavage, transbronchial
pneumonitis. ... pneumonitis; HRCT ... #hypersensitivity ... #pneumonitis #pulmonary ... algorithm #HP #ILD
Upper lung zone preference is seen in:
- Inhaled particles: pneumoconiosis (silica or coal)
- Smoking related diseases
bronchiolitis (RB-ILD ... histiocytosis - Hypersensitivity ... pneumonitis - Sarcoidosis ... - Aspiration - Pulmonary ... #HRCT #ChestCT
Nodular pattern
1. Hypersensitivity pneumonitis: ill defined centrilobular nodules.
2. Miliary TB: random nodules
3. Sarcoidosis: nodules with perilymphatic
Hypersensitivity ... pneumonitis: ill ... Hypersensitivity ... #Clinical #Radiology ... #HRCT #CTChest
Chronic hypersensitivity pneumonitis
The key findings in chronic hypersensitivity pneumonitis are:
Mosaic pattern with areas of ground-glass atenuation
pneumonitis The ... pneumonitis are ... The HRCT shows a ... #Clinical #Radiology ... #CXR #CTChest #
Cryptogenic Organizing Pneumonia (COP)

Cryptogenic Organizing Pneumonia Overview:
 • Idiopathic form of organizing pneumonia
 • formerly BOOP
Organizing Pneumonia - Clinical ... - Imaging: • CXR ... , cavities • HRCT ... ’s, Hypersensitivity ... #management
On the left two different patients with similarl HRCT findings.
The left one is a smoker with
with similarl HRCT ... smoker with RB-ILD ... the right has hypersensitivity ... pneumonits. ... #Clinical #Radiology
On the left a smoker with RB-ILD with subtle HRCT-findings.
The dominant pattern is ground glass opacification.
Additional
with subtle HRCT-findings ... and additional clinical ... interpretion of the HRCT ... would first think hypersensitivity ... pneumonitis, but
UIP with honeycombing (left) and chronic HP (right)
Differential diagnosis of Hypersensitivity Pneumonitis.
Subacute stage:
- RB-ILD: seen in
Differential diagnosis of Hypersensitivity ... Pneumonitis. ... Subacute stage: - RB-ILD ... show very similar HRCT ... #Clinical #Diagnosis
Amiodarone Induced Lung Toxicity Summary

Who?
• 5% of patients
• Dose ≥ 400 mg per day

How?  Possible
injury • Indirect hypersensitivity ... : Interstitial pneumonitis ... Exclusion of other ILDs ... confirmatory findings on HRCT ... #diagnosis #management