12 results
The fourth pattern includes abnormalities that result in decreased lung attenuation or air-filled lesions.
These include:
- Emphysema
-
- Lung cysts (LAM ... LIP, Langerhans cell ... histiocytosis) ... on the basis of HRCT ... TractionBronchiectasis #Cysts
Low Attenuation pattern (2) 
1. Centrilobular emphysema: low attenuation areas without walls. Notice the centrilobular artery
Centrilobular emphysema ... Langerhans cell ... histiocytosis (LCH ... multiple thick walled cysts ... (LAM): regular cysts
Upper lung zone preference is seen in:
- Inhaled particles: pneumoconiosis (silica or coal)
- Smoking related diseases
(centrilobular emphysema ... ) - Langerhans cell ... histiocytosis - ... #Pulmonary #HRCT ... #ChestCT #Differential
Cavities frequently arise within a mass or an area of consolidation as a result of necrosis.
We
them from cysts ... associated pulmonary ... or Langerhans cell ... histiocytosis. ... #RadiologyAssistant
Differential diagnosis of Langerhans cell histiocytosis.
Nodular LCH:
- Sarcoidosis: perilymphatic distribution.
- Metastases: random distribution.
Cystic LCH:
- LAM: round
of Langerhans cell ... histiocytosis. ... : - LAM: round cysts ... Centrilobular emphysema ... CTChest #Cystic #Cysts
HRCT findings in Langerhans cell histiocytosis:
Early stage:
- Small irregular or stellate nodules in centrilobular location.
Late stage
HRCT findings in ... Cystic airspaces Cysts ... There are no cysts ... #Clinical #Radiology ... #RadiologyAssistant
Differential diagnosis on HRCT
Most of our knowledge about imaging findings in interstitial lung disease comes from
When the cysts have ... in Langerhans cell ... histiocytosis or ... #Pulmonary #CXR ... #RadiologyAssistant
On the left a chest film of a 19 year old patient with Langerhans cell histiocytosis.
The
On the left a chest ... caused by multiple cysts ... #Clinical #Radiology ... #CTChest #LCH #LangerhansCellHistiocytosis ... #Cystic #RadiologyAssistant
On the left some diseases with a nodular pattern.
1. Hypersensitivity pneumonitis: ill defined centrilobular nodules.
2. Miliary
Langerhans cell ... histiocytosis: early ... before the typical cysts ... #Pulmonary #CTChest ... NodularPattern #Differential
Differential diagnosis of Lymphangiomyomatosis:
Langerhans cell histiocytosis: > 90% are smokers, cysts have irregular shapes and the
Differential diagnosis ... histiocytosis: ... 90% are smokers, cysts ... Centrilobular emphysema ... #Clinical #Radiology