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The idiopathic interstitial pneumonias (IIPs) comprise a heterogenous group of disorders. 
They represent fundamental responses of
indicates unknown cause ... listed in the table ... of NSIP, UIP, OP ... #Pulmonary #CTChest ... #Findings #RadiologyAssistant
On the left a patient who complained of arthritic pain.

There are multiple small bilateral peripheral consolidations.
The
The findings in ... Clinical #Radiology #CTChest ... #COP #Cryptogenic ... Organizing #Pneumonia #ILD ... #RadiologyAssistant
Consolidation is synonymous with airspace disease.
When you think of the causes of consolidation, think of 'what
or tumor cells (Table ... fibrosis as in UIP ... #Diagnosis #Radiology ... #Pulmonary #CTChest ... #Differential #RadiologyAssistant
HRCT findings in OP
- Bilateral peripheral consolidations, sharply demarcated.
- Consolidations may be migratory.
- Lesions may show
carcinoma, the diagnosis ... Clinical #Radiology #CTChest ... #COP #Cryptogenic ... Organizing #Pneumonia #ILD ... #RadiologyAssistant
Causes of Chronic Dyspnea - Differential Diagnosis Algorithm
Pericardial
 • Effusion
 • Cardiac Tamponade*
 • Constriction
Myocardial
 •
- Differential Diagnosis ... Artery Disease • Stable ... • Asthma • COPD ... Interstitium • ILD ... #Algorithm #Causes
Differential diagnosis
The table summarizes the most common diseases, that present with consolidation.
Chronic diseases are indicated in
The table summarizes ... lobar pneumonia caused ... called cryptogenic (COP ... #Differential #Table ... #RadiologyAssistant
Differential diagnosis on HRCT
Most of our knowledge about imaging findings in interstitial lung disease comes from
Differential diagnosis ... about imaging findings ... low attenuation (table ... UIP can be suspected ... #Differential #RadiologyAssistant
On the left a chest film of a patient with UIP due to IPF.
The findings on
The findings on ... reticular densities caused ... Radiology #CXR #CTChest ... Pneumonitis #Reticular #ILD ... #RadiologyAssistant
Notice that there are multiple densities in both lungs.
The larger ones are ill-defined and maybe there
masses. ... non-productive cough, that did ... The lab-findings ... organizing pneumonia (OP ... OrganizingPneumonia #BOOP #RadiologyAssistant
UIP with honeycombing (left) and chronic HP (right)
Differential diagnosis of Hypersensitivity Pneumonitis.
Subacute stage:
- RB-ILD: seen in
) Differential diagnosis ... Subacute stage: - RB-ILD ... very similar HRCT findings ... #Radiology #CTChest ... #RadiologyAssistant