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The fourth pattern includes abnormalities that result in decreased lung attenuation or air-filled lesions.
These include:
- Emphysema
-
The fourth pattern ... - Emphysema - Lung ... LowAttenuation #Differential ... #Diagram #Comparison ... Emphysema #SignetRing #RadiologyAssistant
Radiographic Features of Pulmonary Diseases
 - Pneumonia
 - Atelectasis
 - Emphysema
 - Pneumothorax
 - Effusion
 -
Pneumothorax - Effusion ... Glass Opacity - Chronic ... Diseases #Radiology #Patterns ... #Lung #CXR #XRay ... #ChestCT #Differential
Low Attenuation pattern 
1. Lymphangiomyomatosis (LAM): uniform cysts in woman of child-bearing age; no history of
Low Attenuation pattern ... adenopathy and pleural effusion ... LowAttenuation #Cystic #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 ... Chronic eosinophilic ... Chronic eosinophilic ... #Comparison #Table ... #RadiologyAssistant
Differential diagnosis on HRCT
Most of our knowledge about imaging findings in interstitial lung disease comes from
Differential diagnosis ... in interstitial lung ... is interstitial lung ... #Differential # ... RadiologyAssistant
Air Bronchograms on Ultrasound

Opacification of alveolar spaces surrounding air-filled bronchioles; enables visualization of well-defined tissue/air interface;
including large effusions ... UAlberta_CCUS #AirBronchograms ... POCUS #Clinical #Lung ... #Ultrasound #comparison
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Lobar pneumonia
On the chest x-ray there is an ill-defined area of increased density in the right
weight loss or long ... list of causes of chronic ... Radiology #CXR #AirBronchogram ... Lobar #Pneumonia #RadiologyAssistant
PseudoARDS-Effusion Pattern

PseudoARDS-effusion refers to a patient with bilateral infiltrates who seems to have ARDS, but whose
PseudoARDS-Effusion ... Pattern PseudoARDS-effusion ... admixture of true lung ... ChestCT #PseudoARDS #Comparison ... #Pattern
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Imaging Patterns of Toxic and Metabolic Brain Disorders

Thalami, Mammillary Bodies and Tectum: Wernicke Encephalopathy
Dentate Nuclei: Metronidazole,
Tracts Involvement: Chronic ... T1 High Signal: Chronic ... Symmetric Restricted Diffusion ... : ODS #MRI #Patterns ... Disorders #Clinical #Differential
It is very important to differentiate between acute consolidation and chronic consolidation, because it will limit
very important to differentiate ... will limit the differential ... - Lung neoplasms ... #Differential # ... RadiologyAssistant