9 results
Differential diagnosis on HRCT
Most of our knowledge about imaging findings in interstitial lung disease comes from
Differential diagnosis ... The cystic pattern ... When the cysts have ... #Diagnosis #Radiology ... Pattern #Differential
Low Attenuation pattern (2) 
1. Centrilobular emphysema: low attenuation areas without walls. Notice the centrilobular artery
Low Attenuation pattern ... multiple thick walled cysts ... (LAM): regular cysts ... #Cystic #Pattern ... #Comparison #Table
The fourth pattern includes abnormalities that result in decreased lung attenuation or air-filled lesions.
These include:
- Emphysema
-
The fourth pattern ... Emphysema - Lung cysts ... low attenuation pattern ... #Diagnosis #Radiology ... TractionBronchiectasis #Cysts
Nodular pattern(2)
1. Sarcoidosis: nodules with perilymphatic distribution, along fissures, adenopathy.
2. TB: Tree-in-bud appearance in a patient
Nodular pattern( ... before the typical cysts ... #HRCT #CTChest ... #Nodular #Pattern ... #Comparison #Table
Differential diagnosis of Langerhans cell histiocytosis.
Nodular LCH:
- Sarcoidosis: perilymphatic distribution.
- Metastases: random distribution.
Cystic LCH:
- LAM: round
Differential diagnosis ... #Radiology #CTChest ... #Cystic #Cysts ... #Differential #Comparison ... #Table #RadiologyAssistant
On the left some diseases with a nodular pattern.
1. Hypersensitivity pneumonitis: ill defined centrilobular nodules.
2. Miliary
pattern. 1. ... before the typical cysts ... #CTChest #Nodular ... #Pattern #NodularPattern ... Comparison #Table
On the left a chest film of a 19 year old patient with Langerhans cell histiocytosis.
The
is a reticular patern ... recognized that this pattern ... caused by multiple cysts ... #CXR #CTChest # ... #Cystic #RadiologyAssistant
High-Res Chest CT Patterns - Differential Diagnosis Framework
Reticular:
 • Septal Thickening: Lymphangitic Carcinoma, Interstitial Edema, Alveolar
High-Res Chest CT ... Patterns - Differential ... Antitripsyn Def • Cysts ... #CT #Patterns # ... Differential #Diagnosis
Septal thickening
Thickening of the lung interstitium by fluid, fibrous tissue, or infiltration by cells results in
cells results in a pattern ... diagnosis (Table ... Kerley B lines on chest ... Nodular or irregular ... #Diagnosis #Radiology