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The fourth pattern includes abnormalities that result in decreased lung attenuation or air-filled lesions.
These include:
- Emphysema
-
result in decreased lung ... attenuation or air-filled ... - Emphysema - Lung ... #Diagnosis #Radiology ... Emphysema #SignetRing #RadiologyAssistant
Consolidation is synonymous with airspace disease.
When you think of the causes of consolidation, think of 'what
replacing the air ... UIP, NSIP and long ... can replace the air ... #Diagnosis #Radiology ... #Differential #RadiologyAssistant
Multiple masses
The differential diagnostic list of multiple masses is very long.
The most important diagnoses are listed
masses is very long ... #Management #Radiology ... #Lung #Multiple ... #Differential #RadiologyAssistant
There is a hydropneumothorax.
Notice the air-fluid level (blue arrow).
The upper lobe is still attached to the
Notice the air-fluid ... There is a lung ... with a cystic lung ... #Clinical #Radiology ... Lymphangioleiomyomatosis #LAM #RadiologyAssistant
CT Lung Signs in Pulmonary Diseases - One Page Summary of Pulmonary Signs
 - Air Crescent
CT Lung Signs in ... Pulmonary Signs - Air ... Camalote sign) - Air ... #ChestCT #CT #Lung ... #differential #radiology
The retracted visceral pleura is seen (blue arrow) which indicates that there is a pneumothorax.
There is
when there is an air-fluid ... is small, this air-fluid ... #Clinical #Radiology ... Hydropneumothorax #RadiologyAssistant
Whenever you see an area of increased density within the lung, it must be the result
density within the lung ... tissue of the lung ... the amount of air ... #Diagnosis #Radiology ... Consolidation #Patterns #RadiologyAssistant
Here another patient with free abdominal air.
Notice the very thin regular line which is the diaphragm
free abdominal air ... #Clinical #Radiology ... #CXR #Free #Air ... FreeAir #Diaphragm #RadiologyAssistant
Lung Abscess - Diagnosis and Management Summary

Lung Abscess Etiology:
 • Necrosis of lung parenchyma by a
and Management ... lat decubitus - air ... Abscess Management ... pneumonectomy if fail ... differential #causes #management
Lobar pneumonia
On the chest x-ray there is an ill-defined area of increased density in the right
Notice the air-bronchogram ... weight loss or long ... #Clinical #Radiology ... Lobar #Pneumonia #RadiologyAssistant