29 results
Upper lung zone preference is seen in:
- Inhaled particles: pneumoconiosis (silica or coal)
- Smoking related diseases
(centrilobular emphysema ... bronchiolitis (RB-ILD ... edema #Diagnosis #Radiology ... HRCT #ChestCT #Differential ... #Upper #Lower #RadiologyAssistant
Low Attenuation pattern 
1. Lymphangiomyomatosis (LAM): uniform cysts in woman of child-bearing age; no history of
Centrilobular emphysema ... low attenuation areas ... #Clinical #Radiology ... Comparison #Table #RadiologyAssistant
Low Attenuation pattern (2) 
1. Centrilobular emphysema: low attenuation areas without walls. Notice the centrilobular artery
Centrilobular emphysema ... low attenuation areas ... #Clinical #Radiology ... Comparison #Table #RadiologyAssistant
Differential diagnosis of Langerhans cell histiocytosis.
Nodular LCH:
- Sarcoidosis: perilymphatic distribution.
- Metastases: random distribution.
Cystic LCH:
- LAM: round
Differential diagnosis ... Centrilobular emphysema ... central dot. - LIP #Clinical ... #Diagnosis #Radiology ... Comparison #Table #RadiologyAssistant
On the left a patient with RB-ILD.
The dominant feature is ground glass opacification and there are
patient with RB-ILD ... centrilobular emphysema ... the precursor of emphysema ... #Clinical #Radiology ... #RadiologyAssistant
Cavities frequently arise within a mass or an area of consolidation as a result of necrosis.
We
In the differential ... To differentiate ... #Clinical #Diagnosis ... #Radiology #CTChest ... #Comparison #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 ... #Clinical #Diagnosis ... #Radiology #CTChest ... #RadiologyAssistant
On the left a typical case of panlobular emphysema.
There is uniform destruction of the underlying architecture
of panlobular emphysema ... to widespread areas ... the other hand, mild ... #Clinical #Radiology ... PanlobularEmphysema #RadiologyAssistant
On the left some diseases with a nodular pattern.
1. Hypersensitivity pneumonitis: ill defined centrilobular nodules.
2. Miliary
bronchiolitis: ill ... #Clinical #Diagnosis ... #Radiology #Pulmonary ... NodularPattern #Differential ... Comparison #Table #RadiologyAssistant
Notice the honeycombing and the preference of the subpleural and basal lung areas. #Clinical #Radiology #CTChest
and basal lung areas ... #Clinical #Radiology ... #Pneumonitis #ILD ... #RadiologyAssistant