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Cryptogenic Organizing Pneumonia (COP)

Cryptogenic Organizing Pneumonia Overview:
 • Idiopathic form of organizing pneumonia
 • formerly BOOP
Unknown • 6-7 cases ... • HRCT: patchy consolidation ... , Pulmonary lymphoma ... #COP #BOOP #pulmonary ... #ILD #diagnosis
Interstitial Lung Diseases (ILD)
Exposure-Related ILD (a.k.a. extrinsic allergic alveolitis): 
 • Hypersensitivity pneumonitis, Farmer's lung, Bird
ILD caused by inhalation ... • Idiopathic pulmonary ... (COP), Respiratory ... #differential #pulmonary ... #causes
Here are the most common examples of these four patterns on a chest x-ray (click image
patterns on a chest x-ray ... - Multifocal ill-defined ... mass - Solitary Pulmonary ... Diagnosis #Clinical #Radiology ... #Patterns #RadiologyAssistant
Differential diagnosis
The table summarizes the most common diseases, that present with consolidation.
Chronic diseases are indicated in
caused by streptococcus ... called cryptogenic (COP ... #Diagnosis #Radiology ... #Pulmonary #CXR ... Differential #Table #RadiologyAssistant
Lobar pneumonia
On the chest x-ray there is an ill-defined area of increased density in the right
On the chest x-ray ... there is an ill-defined ... of chronic consolidation ... #Clinical #Radiology ... #RadiologyAssistant
Based on the images alone, it is usually not possible to determine the cause of the
determine the cause ... (OP) - multiple ... nodular interstitial lung ... Clinical #Diagnosis #Radiology ... #Causes #RadiologyAssistant
On the left a patient with rheumatoid arthritis and bilateral peripheral consolidations as a result of
bilateral peripheral consolidations ... #Clinical #Radiology ... #CTChest #COP # ... RheumatoidArthritis #ILD ... #RadiologyAssistant
The PA-film shows a silhouette sign of the left heart border.
Even without looking at the lateral
anteriorly in the left lung ... This was a consolidation ... caused by Sterptococcus ... #Clinical #Radiology ... SilhouetteSign #RadiologyAssistant
It is very important to differentiate between acute consolidation and chronic consolidation, because it will limit
- Lung neoplasms ... (OP) or chronic ... #Diagnosis #Radiology ... #Pulmonary #CXR ... #Differential #RadiologyAssistant
HRCT findings in OP
- Bilateral peripheral consolidations, sharply demarcated.
- Consolidations may be migratory.
- Lesions may show
cryptogenic organizing pneumonia ... #Clinical #Radiology ... #CTChest #COP # ... Cryptogenic #Organizing #Pneumonia ... #ILD #RadiologyAssistant