11 results
The fourth pattern includes abnormalities that result in decreased lung attenuation or air-filled lesions.
These include:
- Emphysema
-
or air-filled lesions ... #Diagnosis #Radiology ... #Pulmonary #CTChest ... LowAttenuation #Differential ... #Diagram #Comparison
Low Attenuation pattern 
1. Lymphangiomyomatosis (LAM): uniform cysts in woman of child-bearing age; no history of
Low Attenuation ... #Clinical #Radiology ... #HRCT #CTChest ... #Pattern #Comparison ... #Table #RadiologyAssistant
Low Attenuation pattern (2) 
1. Centrilobular emphysema: low attenuation areas without walls. Notice the centrilobular artery
Low Attenuation ... #Clinical #Radiology ... #HRCT #CTChest ... #Pattern #Comparison ... #Table #RadiologyAssistant
Differential diagnosis of Langerhans cell histiocytosis.
Nodular LCH:
- Sarcoidosis: perilymphatic distribution.
- Metastases: random distribution.
Cystic LCH:
- LAM: round
Clinical #Diagnosis #Radiology ... #CTChest #Cystic ... #Cysts #Differential ... #Comparison #Table ... #RadiologyAssistant
Cavities frequently arise within a mass or an area of consolidation as a result of necrosis.
We
In the differential ... air, but occasionally ... Clinical #Diagnosis #Radiology ... #CTChest #Cavity ... #Comparison #RadiologyAssistant
Differential diagnosis on HRCT
Most of our knowledge about imaging findings in interstitial lung disease comes from
Differential diagnosis ... , high and low attenuation ... The cystic pattern ... #Diagnosis #Radiology ... #RadiologyAssistant
On the left some diseases with a nodular pattern.
1. Hypersensitivity pneumonitis: ill defined centrilobular nodules.
2. Miliary
before the typical cysts ... #Pulmonary #CTChest ... NodularPattern #Differential ... #Comparison #Table ... #RadiologyAssistant
Differential diagnosis of Lymphangitic Carcinomatosis. 
On the left multiple diseases showing septal thickening:
1. Lymphangitic carcinomatosis: irregular
with ground glass attenuation ... #Clinical #Radiology ... #Pulmonary #CTChest ... #Comparison #Table ... #RadiologyAssistant
Mosaic attenuation
The term 'mosaic attenuation' is used to describe density differences between affected and non-affected lung
adjacent to lung with air-trapping ... disease #Diagnosis #Radiology ... #Pulmonary #CTChest ... #Differential # ... RadiologyAssistant
Chronic hypersensitivity pneumonitis (2)
The case on the left shows an inspiratory and expiratory scan: the mosaic
scan, indicating air ... included in the differential ... #Clinical #Radiology ... #CTChest #Chronic ... HypersensitivityPneumonitis #Fibrosis #RadiologyAssistant