10 results
Low Attenuation pattern (2) 
1. Centrilobular emphysema: low attenuation areas without walls. Notice the centrilobular artery
Langerhans cell histiocytosis ... #Clinical #Radiology ... #HRCT #CTChest ... #Pattern #Comparison ... #Table #RadiologyAssistant
Differential diagnosis of Langerhans cell histiocytosis.
Nodular LCH:
- Sarcoidosis: perilymphatic distribution.
- Metastases: random distribution.
Cystic LCH:
- LAM: round
Langerhans cell histiocytosis ... Cystic LCH: - LAM ... central dot. - LIP #Clinical ... #Comparison #Table ... #RadiologyAssistant
Nodular pattern(2)
1. Sarcoidosis: nodules with perilymphatic distribution, along fissures, adenopathy.
2. TB: Tree-in-bud appearance in a patient
Langerhans cell histiocytosis ... before the typical cysts ... #Clinical #Radiology ... #HRCT #CTChest ... #Table #RadiologyAssistant
Low Attenuation pattern 
1. Lymphangiomyomatosis (LAM): uniform cysts in woman of child-bearing age; no history of
(LAM): uniform cysts ... #Clinical #Radiology ... #HRCT #CTChest ... #Pattern #Comparison ... #Table #RadiologyAssistant
HRCT findings in Langerhans cell histiocytosis:
Early stage:
- Small irregular or stellate nodules in centrilobular location.
Late stage
HRCT findings in ... : Early stage: - ... Late stage (more ... #Clinical #Radiology ... #RadiologyAssistant
Differential diagnosis on HRCT
Most of our knowledge about imaging findings in interstitial lung disease comes from
low attenuation (table ... The cystic pattern ... Langerhans cell histiocytosis ... seen and in many cases ... #Differential #RadiologyAssistant
On the left some diseases with a nodular pattern.
1. Hypersensitivity pneumonitis: ill defined centrilobular nodules.
2. Miliary
early nodular stage ... before the typical cysts ... #Clinical #Diagnosis ... #Differential #Comparison ... #Table #RadiologyAssistant
Cystic versus Reticular
It can be difficult to determine whether we are dealing with a reticular pattern
Langerhans cell histiocytosis ... In many of such cases ... a HRCT will give ... #Clinical #Radiology ... LangerhansCellHistiocytosis #LCH #RadiologyAssistant
Cavities frequently arise within a mass or an area of consolidation as a result of necrosis.
We
Langerhans cell histiocytosis ... patients with end-stage ... #Clinical #Diagnosis ... #Emphysema #Comparison ... #RadiologyAssistant
On the left a chest film of a 19 year old patient with Langerhans cell histiocytosis.
The
this pattern was caused ... by multiple cysts ... This is late stage ... #Clinical #Radiology ... #Cystic #RadiologyAssistant