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On the left we see a chest film with a typical finger-in-glove shadow.
The HRCT shows focal
The HRCT shows focal ... asthma and serum eosinophilia ... #Clinical #Radiology ... #CXR #CTChest # ... FingerInGlove #Sign
High Attenuation pattern 
1. Chronic eosinophilic pneumonia with peripheral areas of ground glass opacity.
2. Sarcoid end-stage
Chronic eosinophilic ... consolidation #Clinical ... #Radiology #HRCT ... #CTChest #HighAttenuation ... #Pattern #Comparison
Differential diagnosis of Langerhans cell histiocytosis.
Nodular LCH:
- Sarcoidosis: perilymphatic distribution.
- Metastases: random distribution.
Cystic LCH:
- LAM: round
: 'signet ring sign ... central dot. - LIP #Clinical ... #Diagnosis #Radiology ... #CTChest #Cystic ... #Comparison #Table
Luftsichel Sign in Left Upper Lobe Collapse - Chest X-Ray

An upper lobe collapse causes the collapse
Luftsichel Sign ... over the left hemithorax ... LUL #Collapse #clinical ... #radiology #Chest ... #XRay #CXR
On the left two cases with chronic consolidation. 
There are patchy non-segmental consolidations in a subpleural
In chronic eosinophilic ... pneumonia the HRCT ... will be other signs ... look like this #Clinical ... #Radiology #CTChest
Air Bronchogram - Portable anterior–posterior chest radiography showed dense airspace disease with bilateral hemithorax opacification and
anterior–posterior chest ... with bilateral hemithorax ... , a radiologic sign ... #Clinical #Radiology ... #CXR #AirBronchogram
Incidental Finding of Oleothorax - A chest radiograph showed a dense opacity in the upper area
Oleothorax - A chest ... The differential ... calcified empyema, hemothorax ... #Clinical #PCC # ... Radiology #CXR #
UIP with honeycombing (left) and chronic HP (right)
Differential diagnosis of Hypersensitivity Pneumonitis.
Subacute stage:
- RB-ILD: seen in
chronic HP (right) Differential ... show very similar HRCT ... #Clinical #Diagnosis ... #Radiology #CTChest ... #UIP #Comparison
On the left a chest film of a 19 year old patient with Langerhans cell histiocytosis.
The
most challenging differential ... the central dot sign ... helpfull in the differential ... #Clinical #Radiology ... #CXR #CTChest #