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Cryptogenic Organizing Pneumonia (COP)

Cryptogenic Organizing Pneumonia Overview:
 • Idiopathic form of organizing pneumonia
 • formerly BOOP
Pneumonia (COP) ... Pneumonia - Clinical ... Pneumonia - Diagnosis ... #Pneumonia #COP ... #ILD #diagnosis
Differential diagnosis
The table summarizes the most common diseases, that present with consolidation.
Chronic diseases are indicated in
caused by streptococcus ... pneumonia (OP) ... OP is organizing ... called cryptogenic (COP ... #Pulmonary #CXR
On the left a patient with rheumatoid arthritis and bilateral peripheral consolidations as a result of
bilateral peripheral consolidations ... pneumonia. ... #Clinical #Radiology ... #CTChest #COP # ... #ILD #RadiologyAssistant
Interstitial Lung Diseases (ILD)
Exposure-Related ILD (a.k.a. extrinsic allergic alveolitis): 
 • Hypersensitivity pneumonitis, Farmer's lung, Bird
ILD caused by inhalation ... ), Cryptogenic organizing ... pneumonia (COP) ... #diagnosis #differential ... #pulmonary #causes
Based on the images alone, it is usually not possible to determine the cause of the
determine the cause ... Organizing pneumonia ... (OP) - multiple ... #Clinical #Diagnosis ... #Causes #RadiologyAssistant
HRCT findings in OP
- Bilateral peripheral consolidations, sharply demarcated.
- Consolidations may be migratory.
- Lesions may show
carcinoma, the diagnosis ... #Clinical #Radiology ... #CTChest #COP # ... #Pneumonia #ILD ... #RadiologyAssistant
On the left a patient who complained of arthritic pain.

There are multiple small bilateral peripheral consolidations.
The
bilateral peripheral consolidations ... #Clinical #Radiology ... #CTChest #COP # ... #Pneumonia #ILD ... #RadiologyAssistant
It is very important to differentiate between acute consolidation and chronic consolidation, because it will limit
differentiate between acute ... diseases like organizing ... pneumonia (OP) ... #Pulmonary #CXR ... #Differential #RadiologyAssistant
Notice that there are multiple densities in both lungs.
The larger ones are ill-defined and maybe there
masses. ... of organizing pneumonia ... (OP) also known ... #Clinical #Radiology ... #BOOP #RadiologyAssistant
Here are the most common examples of these four patterns on a chest x-ray (click image
- Multifocal ill-defined ... mass - Solitary Pulmonary ... Atelectasis #Diagnosis ... #Clinical #Radiology ... #Patterns #RadiologyAssistant