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The fourth pattern includes abnormalities that result in decreased lung attenuation or air-filled lesions.
These include:
- Emphysema
-
attenuation or ... #Diagnosis #Radiology ... LowAttenuation #Differential ... #Diagram #Comparison ... Emphysema #SignetRing #RadiologyAssistant
Differential diagnosis on HRCT
Most of our knowledge about imaging findings in interstitial lung disease comes from
Differential diagnosis ... in interstitial lung ... , high and low attenuation ... #Diagnosis #Radiology ... #RadiologyAssistant
Mosaic attenuation
The term 'mosaic attenuation' is used to describe density differences between affected and non-affected lung
Mosaic attenuation ... There are patchy ... disease #Diagnosis #Radiology ... #Differential # ... RadiologyAssistant
It is very important to differentiate between acute consolidation and chronic consolidation, because it will limit
between acute consolidation ... - Lung neoplasms ... #Diagnosis #Radiology ... Consolidation #Acute ... #RadiologyAssistant
Cavities frequently arise within a mass or an area of consolidation as a result of necrosis.
We
the surrounding lung ... honeycomb cysts are ... Clinical #Diagnosis #Radiology ... Cyst #Emphysema #Comparison ... #RadiologyAssistant
It can be difficult to distinguish these three entities.
There are two diagnostic hints for further differentiation:
-
in the 'black' lung ... to the 'white' lung ... penicillamine) #Clinical #Radiology ... MosaicAttenuation #Mosaic #Attenuation ... #Comparison #RadiologyAssistant
Chronic hypersensitivity pneumonitis (2)
The case on the left shows an inspiratory and expiratory scan: the mosaic
of ground-glass attenuation ... mid and lower lung ... included in the differential ... #Clinical #Radiology ... HypersensitivityPneumonitis #Fibrosis #RadiologyAssistant
Differential diagnosis of TB.
Primary TB: Acute bacterial pneumonia
Secondary TB: Sarcoidosis, Silicosis, Pneumoconiosis
Endobronchial spread of TB: Bronchopneumonia,
Differential diagnosis ... Primary TB: Acute ... Clinical #Diagnosis #Radiology ... CTChest #MiliaryTB #Comparison ... Metastases #Mimic #RadiologyAssistant
UIP with honeycombing (left) and chronic HP (right)
Differential diagnosis of Hypersensitivity Pneumonitis.
Subacute stage:
- RB-ILD: seen in
chronic HP (right) Differential ... throughout the whole lung ... Clinical #Diagnosis #Radiology ... #CTChest #UIP #Comparison ... Fibrosis #Mimic #ILD #RadiologyAssistant