31 results
Differential diagnosis of Langerhans cell histiocytosis.
Nodular LCH:
- Sarcoidosis: perilymphatic distribution.
- Metastases: random distribution.
Cystic LCH:
- LAM: round
Cystic LCH: - LAM ... : round cysts, evenly ... Centrilobular emphysema ... #Comparison #Table ... #RadiologyAssistant
Low Attenuation pattern 
1. Lymphangiomyomatosis (LAM): uniform cysts in woman of child-bearing age; no history of
(LAM): uniform cysts ... bizarre shaped cysts ... Centrilobular emphysema ... Pattern #Comparison #Table ... #RadiologyAssistant
Low Attenuation pattern (2) 
1. Centrilobular emphysema: low attenuation areas without walls. Notice the centrilobular artery
Centrilobular emphysema ... (LAM): regular cysts ... LowAttenuation #Cystic ... Pattern #Comparison #Table ... #RadiologyAssistant
The fourth pattern includes abnormalities that result in decreased lung attenuation or air-filled lesions.
These include:
- Emphysema
-
These include: - Emphysema ... - Lung cysts (LAM ... TractionBronchiectasis #Cysts ... #Emphysema #SignetRing ... #RadiologyAssistant
Upper lung zone preference is seen in:
- Inhaled particles: pneumoconiosis (silica or coal)
- Smoking related diseases
(centrilobular emphysema ... #Differential #Table ... #Upper #Lower #RadiologyAssistant
Cavities frequently arise within a mass or an area of consolidation as a result of necrosis.
We
Cysts occur without ... associated pulmonary emphysema ... Cysts usually contain ... #Emphysema #Comparison ... #RadiologyAssistant
Posterior L chest scan…same patient. Explains all! Massive L effusion, empyema. Drained and later discharged from
Massive L effusion, empyema ... Lung #Massive #Empyema ... #PleuralEffusion
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Emphysema, when it is severe, can mimick Langerhans cell histiosytosis.
When it extends beyond the centrilobular area
Emphysema, when ... look as if it is cystic ... also areas of emphysema ... Radiology #CTChest #Emphysema ... #RadiologyAssistant
Radiologists use many terms to describe areas of decreased density or lucencies within the lung, like
the lung, like cyst ... pneumatocele, emphysema ... a thick wall Cyst ... with a thin wall Emphysema ... #Differential #Table
Honeycombing is defined by the presence of small cystic spaces with irregularly thickened walls composed of
presence of small cystic ... Honeycomb cysts ... from paraseptal emphysema ... which subpleural cysts ... #Differential #RadiologyAssistant