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Here are the most common examples of these four patterns on a chest x-ray (click image
Consolidation - ... Nodule - Multiple Masses ... Atelectasis #Diagnosis ... #Clinical #Radiology ... #Patterns #RadiologyAssistant
Consolidation is synonymous with airspace disease.
When you think of the causes of consolidation, think of 'what
you think of the causes ... Is it pus, edema ... the alveoli and cause ... #Diagnosis #Radiology ... #Differential #RadiologyAssistant
Differential diagnosis
The table summarizes the most common diseases, that present with consolidation.
Chronic diseases are indicated in
- Pus - exsudate ... lobar pneumonia caused ... called cryptogenic (COP ... #Diagnosis #Radiology ... Differential #Table #RadiologyAssistant
Based on the images alone, it is usually not possible to determine the cause of the
determine the cause ... Organizing pneumonia (OP ... #Clinical #Diagnosis ... #Radiology #CXR ... #Causes #RadiologyAssistant
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 # ... Pneumonia #ILD #RadiologyAssistant
On the left two cases with chronic consolidation. 
There are patchy non-segmental consolidations in a subpleural
On the left two cases ... The final diagnosis ... look like this #Clinical ... #Radiology #CTChest ... OrganizingPneumonia #RadiologyAssistant
Notice that there are multiple densities in both lungs.
The larger ones are ill-defined and maybe there
multiple ill-defined masses ... of chronic consolidation ... organizing pneumonia (OP ... #Clinical #Radiology ... OrganizingPneumonia #BOOP #RadiologyAssistant
On the left a patient who complained of arthritic pain.

There are multiple small bilateral peripheral consolidations.
The
bilateral peripheral consolidations ... in the former case ... #Clinical #Radiology ... #CTChest #COP # ... Pneumonia #ILD #RadiologyAssistant
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 ... EosinophilicPneumonia #RadiologyAssistant
Atoll Sign (Reverse-Halo Sign) on Chest CT
 • Central GGO surrounded by a crescentic or circumferential
circumferential denser consolidation ... • DDx: COP, IFI ... LG, GPA, lipoid pna ... Lung #Pulmonary #diagnosis ... #radiology #clinical