10 results
Low Attenuation pattern 
1. Lymphangiomyomatosis (LAM): uniform cysts in woman of child-bearing age; no history of
LCH: multiple round ... #Clinical #Radiology ... #HRCT #CTChest ... Cystic #Pattern #Comparison ... #Table #RadiologyAssistant
Differential diagnosis of Langerhans cell histiocytosis.
Nodular LCH:
- Sarcoidosis: perilymphatic distribution.
- Metastases: random distribution.
Cystic LCH:
- LAM: round
: round cysts, evenly ... : 'signet ring sign ... #Diagnosis #Radiology ... #CTChest #Cystic ... #Differential #Comparison
Low Attenuation pattern (2) 
1. Centrilobular emphysema: low attenuation areas without walls. Notice the centrilobular artery
histiocytosis (LCH ... #Clinical #Radiology ... #HRCT #CTChest ... Cystic #Pattern #Comparison ... #Table #RadiologyAssistant
In a later stage the nodules start to cavitate and become cysts.
These cysts start as round
cysts start as round ... #Clinical #Radiology ... #CTChest #LCH # ... LangerhansCellHistiocytosis ... Histiocytosis #Cavitary #RadiologyAssistant
On the left a case with multiple round and bizarre shaped cysts.
There was an upper lobe
with multiple round ... #Clinical #Radiology ... #CTChest #LangerhansCellHistiocytosis ... Histiocytosis #LCH ... #RadiologyAssistant
Differential diagnosis of Lymphangitic Carcinomatosis. 
On the left multiple diseases showing septal thickening:
1. Lymphangitic carcinomatosis: irregular
Differential diagnosis ... #Clinical #Radiology ... #Pulmonary #CTChest ... #Differential #Comparison ... #Table #RadiologyAssistant
On the left a chest film of a 19 year old patient with Langerhans cell histiocytosis.
The
challenging differential diagnosis ... the central dot sign ... #Clinical #Radiology ... LCH #LangerhansCellHistiocytosis ... Histiocytosis #Cystic #RadiologyAssistant
he CT shows a lesion that originates in the lung.
Many would have a lungcancer on the
their differential diagnostic ... the comet tail sign ... #Clinical #Radiology ... #CTChest #RoundedAtelectasis ... #RadiologyAssistant
Chronic hypersensitivity pneumonitis (2)
The case on the left shows an inspiratory and expiratory scan: the mosaic
of ground-glass attenuation ... Signs of fibrosis ... #Clinical #Radiology ... #CTChest #Chronic ... HypersensitivityPneumonitis #Fibrosis #RadiologyAssistant
It can be difficult to distinguish these three entities.
There are two diagnostic hints for further differentiation:
-
There are two diagnostic ... gren - Post transplant ... penicillamine) #Clinical ... #Radiology #CTChest ... #Comparison #RadiologyAssistant