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High-Res Chest CT Patterns - Differential Diagnosis Framework
Reticular:
 • Septal Thickening: Lymphangitic Carcinoma, Interstitial Edema, Alveolar
High-Res Chest CT ... Patterns - Differential ... Honeycombing - See Low Attenuation ... Water, Tumor Low Attenuation ... #CT #Patterns #
Here are the most common examples of these four patterns on a chest x-ray (click image
of these four patterns ... on a chest x-ray ... consolidation - Diffuse ... consolidation - Multifocal ill-defined ... Consolidation #Patterns
Miliary Pattern - Chest Radiology
 • Miliary opacities are scattered, small (1 -4 mm) nodules
 •
Miliary Pattern ... mm) nodules • Diffusely ... process or (rarely) diffuse ... PulmPEEPs #Miliary #Pattern ... CXR #clinical #CT
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 ... Pulmonary #HRCT #CTChest ... NodularPattern #Nodular #Pattern
Algorithm for Diagnosis of Diffuse Cystic Lung Disease (DCLD)
Round, smooth cysts with normal lung parenchyma in
Algorithm for Diagnosis ... associated ground glass attenuation ... LCDD, SS Cyst pattern ... presentations - ILD ... DCLD #pulmonary #Algorithm
Basic Interpretation
A structured approach to interpretation of HRCT involves the following questions:
What is the dominant HR-pattern:
reticular
nodular
high
the dominant HR-pattern ... consolidation) low attenuation ... Pulmonary #HRCT #CTChest ... Interpretation #Algorithm ... #ILD #RadiologyAssistant
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 ... Clinical #Radiology #CTChest ... DesquamativeInterstitialPneumonia #ILD
Pulmonary Renal Syndromes - OnePager Summary
Autoimmune ANCA vasculitis (AAV): GPA (granulomatous with polyangiitis), EGPA (eosinophilic granulomatosis
Other tests: • CT ... capillaritis leading to diffuse ... hemorrhage (DAH) • Diffuse ... CT ... • IF staining patterns
Acute interstitial pneumonia (AIP, earlier named Hamman Rich Pneumonitis) is a rare idiopathic lung disease characterized
characterized by diffuse ... The histologic pattern ... characteristics are diffuse ... Clinical #Radiology #CTChest ... AcuteInterstitialPneumonia #ILD
On the left a smoker with RB-ILD with subtle HRCT-findings.
The dominant pattern is ground glass opacification.
Additional
smoker with RB-ILD ... The dominant pattern ... these non-specific CT ... first think RB-ILD ... Clinical #Radiology #CTChest