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The fourth pattern includes abnormalities that result in decreased lung attenuation or air-filled lesions.
These include:
- Emphysema
-
- Emphysema - Lung ... basis of HRCT findings ... #Diagnosis #Radiology ... Differential #Diagram #Comparison ... Emphysema #SignetRing #RadiologyAssistant
The idiopathic interstitial pneumonias (IIPs) comprise a heterogenous group of disorders. 
They represent fundamental responses of
responses of the lung ... involvement of the lung ... vascular diseases (e.g ... #Diagnosis #Radiology ... #RadiologyAssistant
Lobar atelectasis or lobar collaps is an important finding on a chest x-ray and has a
is an important finding ... limited differential diagnosis ... #Diagnosis #Radiology ... Collapse #Patterns #Comparison ... #RadiologyAssistant
Rounded atelectasis
The typical findings of rounded atelectasis on CT are pleural thickening, pleural-based mass and comet
The typical findings ... The underlying lung ... #Diagnosis #Radiology ... RoundedAtelectasis #Findings ... #RadiologyAssistant
Bronchiectasis is defined as localized bronchial dilatation.
The diagnosis of bronchiectasis is usually based on a combination
the following findings ... the peripheral lung ... lumen - associated atelectasis ... #Diagnosis #Radiology ... #Differential #RadiologyAssistant
Lung infarction
The radiographic features of acute pulmonary thromboembolism are insensitive and nonspecific.
The most common radiographic findings
common radiographic findings ... Pulmonary Embolism Diagnosis ... PIOPED) study were atelectasis ... #Clinical #Radiology ... #Infarction #RadiologyAssistant
he CT shows a lesion that originates in the lung.
Many would have a lungcancer on the
originates in the lung ... their differential diagnostic ... lesion and when the findings ... #Clinical #Radiology ... CometTail #Sign #RadiologyAssistant
UIP with honeycombing (left) and chronic HP (right)
Differential diagnosis of Hypersensitivity Pneumonitis.
Subacute stage:
- RB-ILD: seen in
very similar HRCT findings ... throughout the whole lung ... #Radiology #CTChest ... #UIP #Comparison ... Fibrosis #Mimic #ILD #RadiologyAssistant