8 results
Low Attenuation pattern 
1. Lymphangiomyomatosis (LAM): uniform cysts in woman of child-bearing age; no history of
cysts; smoking history ... Clinical #Radiology #HRCT ... #CTChest #LowAttenuation ... Cystic #Pattern #Comparison ... #Table #RadiologyAssistant
Low Attenuation pattern (2) 
1. Centrilobular emphysema: low attenuation areas without walls. Notice the centrilobular artery
cysts; smoking history ... Clinical #Radiology #HRCT ... #CTChest #LowAttenuation ... Cystic #Pattern #Comparison ... #Table #RadiologyAssistant
The fourth pattern includes abnormalities that result in decreased lung attenuation or air-filled lesions.
These include:
- Emphysema
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on the basis of HRCT ... Diagnosis #Radiology #Pulmonary ... #CTChest #LowAttenuation ... #Differential # ... Diagram #Comparison
Central distribution is seen in sarcoidosis and cardiogenic pulmonary edema.
Peripheral distribution is mainly seen in cryptogenic
and cardiogenic pulmonary ... Diagnosis #Radiology #Pulmonary ... #HRCT #ChestCT ... #Differential #Table ... Central #Peripheral #RadiologyAssistant
Differential diagnosis on HRCT
Most of our knowledge about imaging findings in interstitial lung disease comes from
Differential diagnosis ... low attenuation (table ... On a Chest X-Ray ... Diagnosis #Radiology #Pulmonary ... #RadiologyAssistant
Upper lung zone preference is seen in:
- Inhaled particles: pneumoconiosis (silica or coal)
- Smoking related diseases
- Aspiration - Pulmonary ... Diagnosis #Radiology #Pulmonary ... #HRCT #ChestCT ... #Differential #Table ... #Upper #Lower #RadiologyAssistant
Reticular pattern 
1. Lymphangitic carcinomatosis: irregular septal thickening, usually focal or unilateral 50% adenopathy', known carcinoma.
2.
Reticular pattern ... Cardiogenic pulmonary ... #CTChest #Reticular ... #Pattern #Comparison ... #Table #RadiologyAssistant
Septal thickening
Thickening of the lung interstitium by fluid, fibrous tissue, or infiltration by cells results in
diagnosis (Table ... Kerley B lines on chest ... #HRCT #CTChest ... #Differential # ... RadiologyAssistant