13 results
The fourth pattern includes abnormalities that result in decreased lung attenuation or air-filled lesions.
These include:
- Emphysema
-
Emphysema - Lung cysts ... LIP, Langerhans cell ... histiocytosis) ... #Diagnosis #Radiology ... TractionBronchiectasis #Cysts
Low Attenuation pattern (2) 
1. Centrilobular emphysema: low attenuation areas without walls. Notice the centrilobular artery
Langerhans cell ... histiocytosis (LCH ... multiple thick walled cysts ... (LAM): regular cysts ... #HRCT #CTChest
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
Upper lung zone preference is seen in:
- Inhaled particles: pneumoconiosis (silica or coal)
- Smoking related diseases
) - Langerhans cell ... histiocytosis - ... edema #Diagnosis ... #Radiology #Pulmonary ... #HRCT #ChestCT
Nodular pattern(2)
1. Sarcoidosis: nodules with perilymphatic distribution, along fissures, adenopathy.
2. TB: Tree-in-bud appearance in a patient
Langerhans cell ... histiocytosis: early ... before the typical cysts ... #Clinical #Radiology ... #HRCT #CTChest
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 ... #Radiology #CTChest ... #Cystic #Cysts
Differential diagnosis on HRCT
Most of our knowledge about imaging findings in interstitial lung disease comes from
low attenuation (table ... When the cysts have ... histiocytosis or ... #Diagnosis #Radiology ... #Pulmonary #CXR
Cavities frequently arise within a mass or an area of consolidation as a result of necrosis.
We
associated pulmonary ... or Langerhans cell ... histiocytosis. ... #Radiology #CTChest ... #Cavity #Cyst #
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 ... #Clinical #Diagnosis ... #Radiology #Pulmonary
On the left a chest film of a 19 year old patient with Langerhans cell histiocytosis.
The
caused by multiple cysts ... challenging differential diagnosis ... #Clinical #Radiology ... #CTChest #LCH #LangerhansCellHistiocytosis ... #Cystic #RadiologyAssistant