11 results
Differential diagnosis of Langerhans cell histiocytosis.
Nodular LCH:
- Sarcoidosis: perilymphatic distribution.
- Metastases: random distribution.
Cystic LCH:
- LAM: round
Cystic LCH: - LAM ... : 'signet ring sign ... central dot. - LIP #Clinical ... #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 ... #Clinical #Radiology ... #Pattern #Comparison ... #Table #RadiologyAssistant
Low Attenuation pattern (2) 
1. Centrilobular emphysema: low attenuation areas without walls. Notice the centrilobular artery
histiocytosis (LCH ... (LAM): regular cysts ... #Clinical #Radiology ... #Pattern #Comparison ... #Table #RadiologyAssistant
Tree in Bud Sign
The Tree-in-Bud sign represents Endobronchial spread in a linear branching pattern and centrilobular
Tree in Bud Sign ... The Tree-in-Bud ... bacterial/viral/fungal pneumonia ... like cystic fibrosis ... #diagnosis #clinical
Nodular pattern(2)
1. Sarcoidosis: nodules with perilymphatic distribution, along fissures, adenopathy.
2. TB: Tree-in-bud appearance in a patient
TB: Tree-in-bud ... before the typical cysts ... #Clinical #Radiology ... Nodular #Pattern #Comparison ... #Table #RadiologyAssistant
On the left some diseases with a nodular pattern.
1. Hypersensitivity pneumonitis: ill defined centrilobular nodules.
2. Miliary
TB: Tree-in-bud ... before the typical cysts ... #Clinical #Diagnosis ... #Differential #Comparison ... #Table #RadiologyAssistant
In a later stage the nodules start to cavitate and become cysts.
These cysts start as round
In a later stage ... round structures but ... of LCH. ... #Clinical #Radiology ... Histiocytosis #Cavitary #RadiologyAssistant
Cavities frequently arise within a mass or an area of consolidation as a result of necrosis.
We
air, but occasionally ... patients with end-stage ... #Clinical #Diagnosis ... #Emphysema #Comparison ... #RadiologyAssistant
Stage I - Redistribution
In a normal chest film with the patient standing erect, the pulmonary vessels
Stage I - Redistribution ... pulmonary vascular bed ... non-perfused vessels and causes ... In these cases comparison ... Redistribution #RadiologyAssistant
On the left a chest film of a 19 year old patient with Langerhans cell histiocytosis.
The
this pattern was caused ... This is late stage ... the central dot sign ... #Clinical #Radiology ... #CXR #CTChest #LCH