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Central distribution is seen in sarcoidosis and cardiogenic pulmonary edema.
Peripheral distribution is mainly seen in cryptogenic
and cardiogenic pulmonary ... (COP), chronic ... #Diagnosis #Radiology ... #Pulmonary #HRCT ... Central #Peripheral #RadiologyAssistant
Cryptogenic Organizing Pneumonia (COP)

Cryptogenic Organizing Pneumonia Overview:
 • Idiopathic form of organizing pneumonia
 • formerly BOOP
(COP) Cryptogenic ... Anti-dsDNA, ANCA COP ... , Chronic eosinophilia ... pneumonia, Pulmonary ... #COP #BOOP #pulmonary
Differential diagnosis
The table summarizes the most common diseases, that present with consolidation.
Chronic diseases are indicated in
(OP) and chronic ... called cryptogenic (COP ... #Diagnosis #Radiology ... #Pulmonary #CXR ... Differential #Table #RadiologyAssistant
On the left a case of chronic eosinophilic pneumonia.
It was a patient with low-grade fever, progressive
left a case of chronic ... Like in COP we see ... Chronic eosinophilic ... #Clinical #Radiology ... EosinophilicPneumonia #RadiologyAssistant
Interstitial Lung Diseases (ILD)
Exposure-Related ILD (a.k.a. extrinsic allergic alveolitis): 
 • Hypersensitivity pneumonitis, Farmer's lung, Bird
• Idiopathic pulmonary ... (COP), Respiratory ... : Acute, Chronic ... • Pulmonary Langerhans ... #differential #pulmonary
It is very important to differentiate between acute consolidation and chronic consolidation, because it will limit
(OP) or chronic ... eosinophilic pneumonia ... #Diagnosis #Radiology ... #Pulmonary #CXR ... #Differential #RadiologyAssistant
On the left a patient with rheumatoid arthritis and bilateral peripheral consolidations as a result of
of organizing pneumonia ... #Clinical #Radiology ... #CTChest #COP # ... Cryptogenic #Organizing #Pneumonia ... RheumatoidArthritis #ILD #RadiologyAssistant
Lobar pneumonia
On the chest x-ray there is an ill-defined area of increased density in the right
Lobar pneumonia ... list of causes of chronic ... an acute lobar pneumonia ... #Clinical #Radiology ... #RadiologyAssistant
High Attenuation pattern (2) 
1. Non specific interstitial pneumonitis (NSIP): ground glass with traction bronchiectasis, no
Cryptogenic organizing pneumonia ... (COP). 3. ... COP. ... #Clinical #Radiology ... Comparison #Table #RadiologyAssistant
High-Res Chest CT Patterns - Differential Diagnosis Framework
Reticular:
 • Septal Thickening: Lymphangitic Carcinoma, Interstitial Edema, Alveolar
Acute Eos PNA • Chronic ... Hypersensitivity Pneumonia ... , COP, Chronic Eos ... Sarcoidosis, NSIP, COP ... #radiology