16 results
The fourth pattern includes abnormalities that result in decreased lung attenuation or air-filled lesions.
These include:
- Emphysema
-
These include: - Emphysema ... LowAttenuation #Differential ... #Diagram #Comparison ... TractionBronchiectasis #Cysts #Emphysema ... #SignetRing #RadiologyAssistant
Differential diagnosis of Langerhans cell histiocytosis.
Nodular LCH:
- Sarcoidosis: perilymphatic distribution.
- Metastases: random distribution.
Cystic LCH:
- LAM: round
Differential diagnosis ... Centrilobular emphysema ... Cystic #Cysts #Differential ... #Comparison #Table ... #RadiologyAssistant
Low Attenuation pattern 
1. Lymphangiomyomatosis (LAM): uniform cysts in woman of child-bearing age; no history of
Centrilobular emphysema ... Cystic #Pattern #Comparison ... #Table #RadiologyAssistant
Upper lung zone preference is seen in:
- Inhaled particles: pneumoconiosis (silica or coal)
- Smoking related diseases
(centrilobular emphysema ... HRCT #ChestCT #Differential ... #Upper #Lower #RadiologyAssistant
Low Attenuation pattern (2) 
1. Centrilobular emphysema: low attenuation areas without walls. Notice the centrilobular artery
Centrilobular emphysema ... Cystic #Pattern #Comparison ... #Table #RadiologyAssistant
Ketosis Disorders - Comparison Table
 • Starvation Ketosis
 • Alcoholic Ketoacidosis (AKA)
 • Diabetic Ketoacidosis (DKA)
Ketosis Disorders - Comparison ... Disorders #ketones #differential ... diagnosis #management #endocrinology ... #comparison #table
Cavities frequently arise within a mass or an area of consolidation as a result of necrosis.
We
In the differential ... To differentiate ... associated pulmonary emphysema ... #Cavity #Cyst #Emphysema ... #Comparison #RadiologyAssistant
On the left some diseases with a nodular pattern.
1. Hypersensitivity pneumonitis: ill defined centrilobular nodules.
2. Miliary
NodularPattern #Differential ... #Comparison #Table ... #RadiologyAssistant
Differential diagnosis of Lymphangitic Carcinomatosis. 
On the left multiple diseases showing septal thickening:
1. Lymphangitic carcinomatosis: irregular
Differential diagnosis ... Carcinomatosis #Mimic #Differential ... #Comparison #Table ... #RadiologyAssistant
UIP with honeycombing (left) and chronic HP (right)
Differential diagnosis of Hypersensitivity Pneumonitis.
Subacute stage:
- RB-ILD: seen in
chronic HP (right) Differential ... centrilobular emphysema ... #CTChest #UIP #Comparison ... Fibrosis #Mimic #ILD #RadiologyAssistant