10 results
Approach to the diagnosis of chronic hypersensitivity pneumonitis. 
*Consider additional test: bronchoscopy with bronchoalveolar lavage, transbronchial
pneumonitis. ... pneumonitis; HRCT ... #pneumonitis #pulmonary ... diagnosis #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 #
On the left two different patients with similarl HRCT findings.
The left one is a smoker with
with similarl HRCT ... the right has hypersensitivity ... pneumonits. ... airtrapping in HP ... #Clinical #Radiology
UIP with honeycombing (left) and chronic HP (right)
Differential diagnosis of Hypersensitivity Pneumonitis.
Subacute stage:
- RB-ILD: seen in
left) and chronic HP ... Differential diagnosis of Hypersensitivity ... Pneumonitis. ... show very similar HRCT ... #Clinical #Diagnosis
Cryptogenic Organizing Pneumonia (COP)

Cryptogenic Organizing Pneumonia Overview:
 • Idiopathic form of organizing pneumonia
 • formerly BOOP
- Imaging: • CXR ... , cavities • HRCT ... ’s, Hypersensitivity ... #ILD #diagnosis ... #management
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
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
Bronchoalveolar Lavage (BAL) on Bronchoscopy 
BRONCHOALVEOLAR LAVAGE is a technique used in bronchoscopy for several diagnostic
Eosinophilic Pneumonia — Hypersensitivity ... Pneumonitis (HP ... Lung Diseases (ILDs ... #Bronchoscopy #clinical ... #video #pulmonary