11 results
Low Attenuation pattern 
1. Lymphangiomyomatosis (LAM): uniform cysts in woman of child-bearing age; no history of
low attenuation areas ... Radiology #HRCT #CTChest ... #LowAttenuation ... Cystic #Pattern #Comparison ... #Table #RadiologyAssistant
The fourth pattern includes abnormalities that result in decreased lung attenuation or air-filled lesions.
These include:
- Emphysema
-
Radiology #Pulmonary #CTChest ... #LowAttenuation ... #Differential # ... Diagram #Comparison ... Emphysema #SignetRing #RadiologyAssistant
Low Attenuation pattern (2) 
1. Centrilobular emphysema: low attenuation areas without walls. Notice the centrilobular artery
low attenuation areas ... Radiology #HRCT #CTChest ... #LowAttenuation ... Cystic #Pattern #Comparison ... #Table #RadiologyAssistant
High Attenuation pattern 
1. Chronic eosinophilic pneumonia with peripheral areas of ground glass opacity.
2. Sarcoid end-stage
Chronic eosinophilic ... Chronic eosinophilic ... Radiology #HRCT #CTChest ... HighAttenuation #Pattern #Comparison ... #Table #RadiologyAssistant
Chronic hypersensitivity pneumonitis
The key findings in chronic hypersensitivity pneumonitis are:
Mosaic pattern with areas of ground-glass atenuation
Mosaic pattern with areas ... atenuation and areas ... Clinical #Radiology #CXR ... #CTChest #Hypersensitivity ... #Fibrosis #RadiologyAssistant
Longstanding Sarcoidosis
Here a typical chest film in a patient with long standing Sarcoidosis (stage IV).
There is
Here a typical chest ... The differential ... diagnosis includes chronic ... Clinical #Radiology #CXR ... Sarcoidosis #Fibrosis #RadiologyAssistant
UIP with honeycombing (left) and chronic HP (right)
Differential diagnosis of Hypersensitivity Pneumonitis.
Subacute stage:
- RB-ILD: seen in
HP (right) Differential ... Chronic stage: - ... Diagnosis #Radiology #CTChest ... #UIP #Comparison ... Fibrosis #Mimic #ILD #RadiologyAssistant
Mosaic attenuation
The term 'mosaic attenuation' is used to describe density differences between affected and non-affected lung
There are patchy areas ... oligemic lung due to chronic ... Radiology #Pulmonary #CTChest ... #Attenuation #Differential ... #RadiologyAssistant
Chronic hypersensitivity pneumonitis (2)
The case on the left shows an inspiratory and expiratory scan: the mosaic
Chronic hypersensitivity ... included in the differential ... Clinical #Radiology #CTChest ... #Chronic #Hypersensitivity ... HypersensitivityPneumonitis #Fibrosis #RadiologyAssistant
Lobar atelectasis or lobar collaps is an important finding on a chest x-ray and has a
important finding on a chest ... has a limited differential ... Diagnosis #Radiology #CXR ... Collapse #Patterns #Comparison ... #RadiologyAssistant