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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 ... - Diffuse consolidation ... Interstitial - ... Nodule or mass ... #Patterns #RadiologyAssistant
Algorithm for nodular pattern
The algorithm to distinguish perilymphatic, random and centrilobular nodules is the following:
- Look
Algorithm for nodular ... pattern The algorithm ... are visible, the pattern ... are diffuse and ... #Nodular #Pattern
On the left some diseases with a nodular pattern.
1. Hypersensitivity pneumonitis: ill defined centrilobular nodules.
2. Miliary
diseases with a nodular ... pattern. 1. ... centrilobular nodules ... #Pattern #NodularPattern ... #Differential #Comparison
Pulmonary Tuberculosis - Patterns of Involvement
 • Scarring, Nodules and Consolidation
    - Lobar
Tuberculosis - Patterns ... and Consolidation ... - Lobar consolidation ... Innumerable, bilateral, diffusely ... Tuberculosis #TB #Patterns
Whenever you see an area of increased density within the lung, it must be the result
of these four patterns ... . 1- Consolidation ... resulting in lobar, diffuse ... opacities. 2- Interstitial ... #Patterns #RadiologyAssistant
The distribution of nodules shown on HRCT is the most important factor in making an accurate
pattern. ... peribronchovascular interstitium ... Pulmonary #HRCT #NodularPattern ... #Nodular #Pattern ... Perilymphatic #Comparison
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
Sarcoidosis
On a CXR sarcoidosis usually first presents with hilar and mediastinal lymphadenopathy (example).
Parenchymal disease can present
can present as consolidation ... When these small nodules ... they may resemble consolidation ... #Interstitial # ... Pattern #Sarcoidosis
Cryptogenic Organizing Pneumonia (COP)

Cryptogenic Organizing Pneumonia Overview:
 • Idiopathic form of organizing pneumonia
 • formerly BOOP
opacities, Unilateral consolidation ... and GG pattern, ... irregular lines, nodular ... • HRCT: patchy consolidation ... Pulmonary lymphoma, Diffuse
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