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Here are the most common examples of these four patterns on a chest x-ray (click image
of these four patterns ... - Multifocal ill-defined ... Atelectasis #Diagnosis #Clinical ... #Radiology #CXR ... #Patterns #RadiologyAssistant
Nodular pattern
1. Hypersensitivity pneumonitis: ill defined centrilobular nodules.
2. Miliary TB: random nodules
3. Sarcoidosis: nodules with perilymphatic
Nodular pattern ... Hypersensitivity pneumonitis: ill ... #Clinical #Radiology ... #Pattern #Comparison ... #Table #RadiologyAssistant
High Attenuation pattern 
1. Chronic eosinophilic pneumonia with peripheral areas of ground glass opacity.
2. Sarcoid end-stage
High Attenuation pattern ... of consolidation ... #Clinical #Radiology ... HighAttenuation #Pattern ... Comparison #Table #RadiologyAssistant
On the left some diseases with a nodular pattern.
1. Hypersensitivity pneumonitis: ill defined centrilobular nodules.
2. Miliary
pattern. 1. ... #Clinical #Diagnosis ... #Radiology #Pulmonary ... #Pattern #NodularPattern ... Comparison #Table #RadiologyAssistant
Whenever you see an area of increased density within the lung, it must be the result
of these four patterns ... . 1- Consolidation ... or multifocal ill-defined ... #Diagnosis #Radiology ... #Patterns #RadiologyAssistant
Sarcoidosis
On a CXR sarcoidosis usually first presents with hilar and mediastinal lymphadenopathy (example).
Parenchymal disease can present
can present as consolidation ... they may resemble consolidation ... #Clinical #Radiology ... #Interstitial #Pattern ... #Sarcoidosis #RadiologyAssistant
HRCT findings in OP
- Bilateral peripheral consolidations, sharply demarcated.
- Consolidations may be migratory.
- Lesions may show
restricted to areas ... of consolidation ... #Clinical #Radiology ... Organizing #Pneumonia #ILD ... #RadiologyAssistant
Chronic hypersensitivity pneumonitis
The key findings in chronic hypersensitivity pneumonitis are:
Mosaic pattern with areas of ground-glass atenuation
pneumonitis are: Mosaic pattern ... shows a mosaic pattern ... and secondry nodules ... #Clinical #Radiology ... Chronic #Fibrosis #RadiologyAssistant
Basic Interpretation
A structured approach to interpretation of HRCT involves the following questions:
What is the dominant HR-pattern:
reticular
nodular
high
the dominant HR-pattern ... : reticular nodular ... (ground-glass, consolidation ... Interpretation #Algorithm ... #ILD #RadiologyAssistant
Septic emboli
Septic emboli usually present as multiple ill-defined nodules.
In about 50% cavitation is seen.
CT demonstrates more
nodules. ... in the proper clinical ... which are probably consolidations ... #Clinical #Radiology ... SepticEmboli #Cavity #RadiologyAssistant