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Central distribution is seen in sarcoidosis and cardiogenic pulmonary edema.
Peripheral distribution is mainly seen in cryptogenic
distribution is seen in sarcoidosis ... (COP), chronic ... eosinophilic pneumonia ... #Differential #Table ... Central #Peripheral #RadiologyAssistant
High Attenuation pattern (2) 
1. Non specific interstitial pneumonitis (NSIP): ground glass with traction bronchiectasis, no
Cryptogenic organizing pneumonia ... Sarcoidosis end-stage ... #Clinical #Radiology ... Pattern #Comparison #Table ... #RadiologyAssistant
Cryptogenic Organizing Pneumonia (COP)

Cryptogenic Organizing Pneumonia Overview:
 • Idiopathic form of organizing pneumonia
 • formerly BOOP
(COP) Cryptogenic ... Unknown • 6-7 cases ... - Clinical manifestations ... Anti-dsDNA, ANCA COP ... #COP #BOOP #pulmonary
Differential diagnosis
The table summarizes the most common diseases, that present with consolidation.
Chronic diseases are indicated in
diagnosis The table ... caused by streptococcus ... called cryptogenic (COP ... #Differential #Table ... #RadiologyAssistant
Interstitial pneumonias
An acute reticular pattern is most frequently caused by interstitial edema due to cardiac heart
Interstitial pneumonias ... most frequently caused ... The other cause ... #Clinical #Radiology ... #PJP #RadiologyAssistant
Interstitial Lung Diseases (ILD)
Exposure-Related ILD (a.k.a. extrinsic allergic alveolitis): 
 • Hypersensitivity pneumonitis, Farmer's lung, Bird
ILD caused by inhalation ... (COP), Respiratory ... Other ILDs: • Sarcoidosis ... • Eosinophilic pneumonia ... differential #pulmonary #causes
Lobar pneumonia
On the chest x-ray there is an ill-defined area of increased density in the right
In the proper clinical ... include the list of causes ... caused by Streptcoccus ... #Clinical #Radiology ... #RadiologyAssistant
The PA-film shows a silhouette sign of the left heart border.
Even without looking at the lateral
caused by Sterptococcus ... pneumoniae. ... #Clinical #Radiology ... #CXR #Pneumonia ... SilhouetteSign #RadiologyAssistant
Causes of Chronic Dyspnea - Differential Diagnosis Algorithm
Pericardial
 • Effusion
 • Cardiac Tamponade*
 • Constriction
Myocardial
 •
Artery Disease • Stable ... • Asthma • COPD ... Pulmonary Alveoli • Pneumonia ... • ARDS • COPD ... ILD • CHF • Sarcoidosis
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