17 results
Differential diagnosis of Langerhans cell histiocytosis.
Nodular LCH:
- Sarcoidosis: perilymphatic distribution.
- Metastases: random distribution.
Cystic LCH:
- LAM: round
Nodular LCH: - Sarcoidosis ... Cystic LCH: - LAM ... : 'signet ring sign ... Diagnosis #Radiology #CTChest ... Comparison #Table #RadiologyAssistant
Low Attenuation pattern 
1. Lymphangiomyomatosis (LAM): uniform cysts in woman of child-bearing age; no history of
(LAM): uniform cysts ... LCH: multiple round ... low attenuation areas ... Radiology #HRCT #CTChest ... Comparison #Table #RadiologyAssistant
Low Attenuation pattern (2) 
1. Centrilobular emphysema: low attenuation areas without walls. Notice the centrilobular artery
low attenuation areas ... histiocytosis (LCH ... (LAM): regular cysts ... Radiology #HRCT #CTChest ... Comparison #Table #RadiologyAssistant
On the left another case of Langerhans' cell histiocytosis.
It started as small noduli, which progressed over
bizarre shaped cysts ... Clinical #Radiology #CTChest ... #LCH #LangerhansCellHistiocytosis ... Histiocytosis #Cystic ... #RadiologyAssistant
Cystic versus Reticular
It can be difficult to determine whether we are dealing with a reticular pattern
histiocytosis (LCH ... LCH is called a ... Radiology #CXR #CTChest ... LangerhansCellHistiocytosis #LCH ... #RadiologyAssistant
On the left radiological pathological correlation of Langerhans cell histiocytosis in respectively nodular stage and early
early and late cystic ... Radiology #Pathology #CTChest ... #Microscopy #LCH ... Histiocytosis #Cavitary #RadiologyAssistant
In a later stage the nodules start to cavitate and become cysts.
These cysts start as round
These cysts start ... of LCH. ... patients with LCH ... Clinical #Radiology #CTChest ... Histiocytosis #Cavitary #RadiologyAssistant
Emphysema, when it is severe, can mimick Langerhans cell histiosytosis.
When it extends beyond the centrilobular area
look as if it is cystic ... patients with LCH ... , but also areas ... Clinical #Radiology #CTChest ... #Emphysema #RadiologyAssistant
HRCT findings in Langerhans cell histiocytosis:
Early stage:
- Small irregular or stellate nodules in centrilobular location.
Late stage
airspaces Cysts ... There are no cysts ... Clinical #Radiology #CTChest ... #LCH #LangerhansCellHistiocytosis ... Histiocytosis #RadiologyAssistant
On the left a chest film of a 19 year old patient with Langerhans cell histiocytosis.
The
caused by multiple cysts ... the central dot sign ... Radiology #CXR #CTChest ... #LCH #LangerhansCellHistiocytosis ... #RadiologyAssistant