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On the left a case of chronic eosinophilic pneumonia.
It was a patient with low-grade fever, progressive
On the left a case ... Like in COP we see ... non-segmental consolidations ... #Clinical #Radiology ... #CTChest #Eosinophilic
Eosinophilic Pneumonia
When to suspect Eosinophilic Pneumonia? Non-resolving pneumonia + BAL > 25% eosinophils + excluded more
excluded more common diagnoses ... Dyspnea+, Pleuritic Chest ... Pneumonia (CEP) ... - Peripheral Consolidations ... #Pneumonia #diagnosis
Here are the most common examples of these four patterns on a chest x-ray (click image
patterns on a chest ... - Multifocal ill-defined ... Nodule - Multiple Masses ... Atelectasis #Diagnosis ... #Clinical #Radiology
Differential diagnosis
The table summarizes the most common diseases, that present with consolidation.
Chronic diseases are indicated in
Differential diagnosis ... lobar pneumonia caused ... ) and chronic eosinophilic ... called cryptogenic (COP ... #Diagnosis #Radiology
On the left two cases with chronic consolidation. 
There are patchy non-segmental consolidations in a subpleural
On the left two cases ... with chronic consolidation ... The final diagnosis ... this #Clinical #Radiology ... #CTChest #COP #
HRCT findings in OP
- Bilateral peripheral consolidations, sharply demarcated.
- Consolidations may be migratory.
- Lesions may show
of OP. ... carcinoma, the diagnosis ... #Clinical #Radiology ... #CTChest #COP # ... Organizing #Pneumonia #ILD
Notice that there are multiple densities in both lungs.
The larger ones are ill-defined and maybe there
with multifocal consolidations ... masses. ... of chronic consolidation ... organizing pneumonia (OP ... #Clinical #Radiology
Interstitial Lung Diseases (ILD)
Exposure-Related ILD (a.k.a. extrinsic allergic alveolitis): 
 • Hypersensitivity pneumonitis, Farmer's lung, Bird
ILD caused by inhalation ... organizing pneumonia (COP ... polyangiitis, Eosinophilic ... #diagnosis #differential ... #pulmonary #causes
On the left a patient with rheumatoid arthritis and bilateral peripheral consolidations as a result of
bilateral peripheral consolidations ... Patients with OP ... #Clinical #Radiology ... #CTChest #COP # ... RheumatoidArthritis #ILD
Cryptogenic Organizing Pneumonia (COP)

Cryptogenic Organizing Pneumonia Overview:
 • Idiopathic form of organizing pneumonia
 • formerly BOOP
Unknown • 6-7 cases ... • HRCT: patchy consolidation ... pneumonia, Chronic eosinophilia ... BOOP #pulmonary #ILD ... #diagnosis #management