14 results
Differential diagnosis of Langerhans cell histiocytosis.
Nodular LCH:
- Sarcoidosis: perilymphatic distribution.
- Metastases: random distribution.
Cystic LCH:
- LAM: round
: 'signet ring sign ... Clinical #Diagnosis #Radiology ... #CTChest #Cystic ... #Comparison #Table ... #RadiologyAssistant
On the left a patient with ground glass pattern in a mosaic distribution.
Some lobules are involved
with ground glass pattern ... #Clinical #Radiology ... #CTChest #GGO # ... MosaicAttenuation ... #Mosaic #HypersenstitivityPneumonitis
Low Attenuation pattern 
1. Lymphangiomyomatosis (LAM): uniform cysts in woman of child-bearing age; no history of
Low Attenuation pattern ... #Clinical #Radiology ... #HRCT #CTChest ... #Pattern #Comparison ... #Table #RadiologyAssistant
Low Attenuation pattern (2) 
1. Centrilobular emphysema: low attenuation areas without walls. Notice the centrilobular artery
Low Attenuation pattern ... #Clinical #Radiology ... #HRCT #CTChest ... #Pattern #Comparison ... #Table #RadiologyAssistant
Chronic hypersensitivity pneumonitis
The key findings in chronic hypersensitivity pneumonitis are:
Mosaic pattern with areas of ground-glass atenuation
pattern with areas ... #Clinical #Radiology ... #CXR #CTChest # ... #Pneumonitis #HypersensitivityPneumonitis ... Chronic #Fibrosis #RadiologyAssistant
Here another case of hypersensitivity pneumonitis.
There is a mosaic pattern.
Some secundary lobules demonstrate ground-glass opacity due
pattern. ... #Clinical #Radiology ... #CTChest #Hypersensitivity ... #Pneumonitis #HypersensitivityPneumonitis ... #RadiologyAssistant
The fourth pattern includes abnormalities that result in decreased lung attenuation or air-filled lesions.
These include:
- Emphysema
-
The fourth pattern ... #Diagnosis #Radiology ... #Pulmonary #CTChest ... Differential #Diagram #Comparison ... Emphysema #SignetRing #RadiologyAssistant
Nodular pattern(2)
1. Sarcoidosis: nodules with perilymphatic distribution, along fissures, adenopathy.
2. TB: Tree-in-bud appearance in a patient
before the typical cysts ... #Clinical #Radiology ... #HRCT #CTChest ... #Comparison #Table ... #RadiologyAssistant
Chronic hypersensitivity pneumonitis (2)
The case on the left shows an inspiratory and expiratory scan: the mosaic
Signs of fibrosis ... #Clinical #Radiology ... #CTChest #Chronic ... #Pneumonitis #HypersensitivityPneumonitis ... #Fibrosis #RadiologyAssistant
On the left some diseases with a nodular pattern.
1. Hypersensitivity pneumonitis: ill defined centrilobular nodules.
2. Miliary
before the typical cysts ... Clinical #Diagnosis #Radiology ... #Pulmonary #CTChest ... #Differential #Comparison ... #Table #RadiologyAssistant