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The fourth pattern includes abnormalities that result in decreased lung attenuation or air-filled lesions.
These include:
- Emphysema
-
basis of HRCT findings ... #Diagnosis #Radiology ... #Pulmonary #CTChest ... #Differential #Diagram ... Emphysema #SignetRing #RadiologyAssistant
Cavities frequently arise within a mass or an area of consolidation as a result of necrosis.
We
measure less than 1 mm ... the surrounding lung ... associated pulmonary ... #Radiology #CTChest ... Emphysema #Comparison #RadiologyAssistant
The idiopathic interstitial pneumonias (IIPs) comprise a heterogenous group of disorders. 
They represent fundamental responses of
indicates unknown cause ... vascular diseases (e.g ... #Diagnosis #Radiology ... #Pulmonary #CTChest ... #RadiologyAssistant
Differential diagnosis on HRCT
Most of our knowledge about imaging findings in interstitial lung disease comes from
Differential diagnosis ... When the cysts have ... #Diagnosis #Radiology ... #Pulmonary #CXR ... #Differential #RadiologyAssistant
Based on the images alone, it is usually not possible to determine the cause of the
findings. ... nodular interstitial lung ... #Clinical #Diagnosis ... #Radiology #CXR ... #RadiologyAssistant
Honeycombing is defined by the presence of small cystic spaces with irregularly thickened walls composed of
and subpleural lung ... regardless of their cause ... This finding can ... #Diagnosis #Radiology ... #Pulmonary #Honeycombing
Key findings in Lymphangiomyomatosis:
Numerous thin-walled cysts, surrounded by normal parenchyma.
Cysts range from 2mm to 5cm in
Key findings in ... throughout the lungs ... perceptible to 4 mm ... #Clinical #Radiology ... #CTChest #Lymphangiomyomatosis
Lung infarction
The radiographic features of acute pulmonary thromboembolism are insensitive and nonspecific.
The most common radiographic findings
common radiographic findings ... Embolism Diagnosis ... In most cases of ... #Clinical #Radiology ... #Infarction #RadiologyAssistant
Congestive heart failure (CHF) is the result of insufficient output because of cardiac failure, high resistance
In the lungs LV ... disease and causes ... #Diagnosis #Radiology ... CXR #Features #Findings ... #Diagram #RadiologyAssistant