14 results
The fourth pattern includes abnormalities that result in decreased lung attenuation or air-filled lesions.
These include:
- Emphysema
-
The fourth pattern ... low attenuation pattern ... on the basis of HRCT ... Pulmonary #CTChest #LowAttenuation ... Differential #Diagram #Comparison
Low Attenuation pattern 
1. Lymphangiomyomatosis (LAM): uniform cysts in woman of child-bearing age; no history of
Low Attenuation pattern ... Clinical #Radiology #HRCT ... #CTChest #LowAttenuation ... #Cystic #Pattern ... #Comparison #Table
Low Attenuation pattern (2) 
1. Centrilobular emphysema: low attenuation areas without walls. Notice the centrilobular artery
Low Attenuation pattern ... Clinical #Radiology #HRCT ... #CTChest #LowAttenuation ... #Cystic #Pattern ... #Comparison #Table
Nodular pattern
1. Hypersensitivity pneumonitis: ill defined centrilobular nodules.
2. Miliary TB: random nodules
3. Sarcoidosis: nodules with perilymphatic
Nodular pattern ... Hypersensitivity pneumonitis: ill ... Clinical #Radiology #HRCT ... CTChest #Nodular #Pattern ... #Comparison #Table
Here are the most common examples of these four patterns on a chest x-ray (click image
of these four patterns ... consolidation - Diffuse ... consolidation - Multifocal ill-defined ... Clinical #Radiology #CXR ... Consolidation #Patterns
Algorithm for nodular pattern
The algorithm to distinguish perilymphatic, random and centrilobular nodules is the following:
- Look
pattern The algorithm ... are visible, the pattern ... the nodules are diffuse ... Radiology #Pulmonary #HRCT ... NodularPattern #Nodular #Pattern
Differential diagnosis
The table summarizes the most common diseases, that present with consolidation.
Chronic diseases are indicated in
to look at the pattern ... usually multiple ill-defined ... more than one pattern ... The old name is ... Radiology #Pulmonary #CXR
Whenever you see an area of increased density within the lung, it must be the result
of these four patterns ... resulting in lobar, diffuse ... or multifocal ill-defined ... Diagnosis #Radiology #CXR ... Consolidation #Patterns
On the left a patient with DIP.
The HRCT shows diffuse areas of ground-glass density in the
The HRCT shows diffuse ... and some mosaic pattern ... DesquamativeInterstitialPneumonia #ILD
Cryptogenic Organizing Pneumonia (COP)

Cryptogenic Organizing Pneumonia Overview:
 • Idiopathic form of organizing pneumonia
 • formerly BOOP
- Imaging: • CXR ... consolidation and GG pattern ... , cavities • HRCT ... Pulmonary lymphoma, Diffuse ... BOOP #pulmonary #ILD