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The fourth pattern includes abnormalities that result in decreased lung attenuation or air-filled lesions.
These include:
- Emphysema
-
- Lung cysts (LAM ... #Diagnosis #Radiology ... #Pulmonary #CTChest ... Differential #Diagram #Comparison ... #SignetRing #RadiologyAssistant
Radiographic Features of Pulmonary Diseases
 - Pneumonia
 - Atelectasis
 - Emphysema
 - Pneumothorax
 - Effusion
 -
Atelectasis - Emphysema ... #Diseases #Radiology ... #Patterns #Lung ... #CXR #XRay #ChestCT ... #Differential #Diagnosis
Upper lung zone preference is seen in:
- Inhaled particles: pneumoconiosis (silica or coal)
- Smoking related diseases
Upper lung zone ... (centrilobular emphysema ... edema #Diagnosis ... #Radiology #Pulmonary ... #Upper #Lower #RadiologyAssistant
Radiologists use many terms to describe areas of decreased density or lucencies within the lung, like
pneumatocele, emphysema ... with a thin wall Emphysema ... visible wall #CXR ... #Pulmonary #Diagnosis ... #Radiology
Tree-in-bud
In centrilobular nodules the recognition of 'tree-in-bud' is of value for narrowing the differential diagnosis.
Tree-in-bud describes
tree-in-bud' is of value ... the differential diagnosis ... identified in the lung ... #Radiology #Pulmonary ... TreeInBud #Diagram #RadiologyAssistant
Cavities frequently arise within a mass or an area of consolidation as a result of necrosis.
We
the surrounding lung ... without associated pulmonary ... emphysema. ... #Radiology #CTChest ... #Comparison #RadiologyAssistant
Batwing
A bilateral perihilar distribution of consolidation is also called a Batwing distribution.
The sparing of the periphery
periphery of the lung ... most typical of pulmonary ... #Diagnosis #Radiology ... #CXR #Batwing # ... Differential #RadiologyAssistant
There is a hydropneumothorax.
Notice the air-fluid level (blue arrow).
The upper lobe is still attached to the
is a possible diagnosis ... airways leading to pulmonary ... #Clinical #Radiology ... #CXR #Pneumothorax ... Lymphangioleiomyomatosis #LAM #RadiologyAssistant
Differential diagnosis on HRCT
Most of our knowledge about imaging findings in interstitial lung disease comes from
Differential diagnosis ... in interstitial lung ... #Diagnosis #Radiology ... #Pulmonary #CXR ... #Differential #RadiologyAssistant
When a rib fracture heals, the callus formation may create a mass-like appearance (blue arrow).
Sometimes a
fracture from a lung ... Notice the large lung ... #Clinical #Radiology ... #CXR #Old #RibFracture ... #RadiologyAssistant