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Here are the most common examples of these four patterns on a chest x-ray (click image
of these four patterns ... Interstitial - ... Nodule or mass ... Clinical #Radiology #CXR ... #Patterns #RadiologyAssistant
Differential diagnosis on HRCT
Most of our knowledge about imaging findings in interstitial lung disease comes from
there are four patterns ... : reticular, nodular ... low attenuation (table ... common pattern ... pattern can be
High Attenuation pattern (2) 
1. Non specific interstitial pneumonitis (NSIP): ground glass with traction bronchiectasis, no
High Attenuation pattern ... Non specific interstitial ... Sarcoidosis end-stage: consolidation ... HighAttenuation #Pattern ... #Comparison #Table
Cryptogenic Organizing Pneumonia (COP)

Cryptogenic Organizing Pneumonia Overview:
 • Idiopathic form of organizing pneumonia
 • formerly BOOP
- Imaging: • CXR ... opacities, Unilateral consolidation ... and GG pattern, ... irregular lines, nodular ... • HRCT: patchy consolidation
Differential diagnosis
The table summarizes the most common diseases, that present with consolidation.
Chronic diseases are indicated in
diagnosis The table ... to look at the pattern ... more than one pattern ... called cryptogenic (COP ... Radiology #Pulmonary #CXR
Whenever you see an area of increased density within the lung, it must be the result
of these four patterns ... . 1- Consolidation ... opacities. 2- Interstitial ... Diagnosis #Radiology #CXR ... #Patterns #RadiologyAssistant
Sarcoidosis
On a CXR sarcoidosis usually first presents with hilar and mediastinal lymphadenopathy (example).
Parenchymal disease can present
Sarcoidosis On a CXR ... can present as consolidation ... Clinical #Radiology #CXR ... #Interstitial # ... Pattern #Sarcoidosis
High-Res Chest CT Patterns - Differential Diagnosis Framework
Reticular:
 • Septal Thickening: Lymphangitic Carcinoma, Interstitial Edema, Alveolar
High-Res Chest CT Patterns ... Lymphangitic Carcinoma, Interstitial ... Low Attenuation Nodular ... Hemorrhage, Edema • Consolidation ... HighRes #Chest #CT #Patterns
Lung abnormalities mostly present as areas of increased density, which can be divided into the following
the following patterns ... : Consolidation ... Atelectasis Nodule ... Pathophys #Radiology #CXR ... #Lung #Patterns