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The fourth pattern includes abnormalities that result in decreased lung attenuation or air-filled lesions.
These include:
- Emphysema
-
The fourth pattern ... result in decreased lung ... - Lung cysts (LAM ... low attenuation pattern ... LowAttenuation #Differential
Differential diagnosis on HRCT
Most of our knowledge about imaging findings in interstitial lung disease comes from
Differential diagnosis ... in interstitial lung ... there are four patterns ... low attenuation (table ... is interstitial lung
Radiographic Features of Pulmonary Diseases
 - Pneumonia
 - Atelectasis
 - Emphysema
 - Pneumothorax
 - Effusion
 -
Atelectasis - Emphysema ... Reticular - Emphysema ... Diseases #Radiology #Patterns ... #Lung #CXR #XRay ... #ChestCT #Differential
Differential diagnosis
The table summarizes the most common diseases, that present with consolidation.
Chronic diseases are indicated in
Differential diagnosis ... The table summarizes ... to look at the pattern ... more than one pattern ... #Table #RadiologyAssistant
Main causes of diffuse parenchymal lung diseases.

#differential #algorithm #diagnosis #causes #DPLD #ILD #parenchymal #lung #diseases #pulmonary
Main causes of diffuse ... parenchymal lung ... #differential #algorithm ... #causes #DPLD #ILD ... #parenchymal #lung
Lab patterns seen in Inborn Errors of Metabolism

A table of lab values compiled from UpToDate and
Lab patterns seen ... Metabolism A table ... metabolicemergency-pathophysiology-differential-pediatrics-metabolism-algorithm-diagnosis ... Peds #Pediatrics #Table ... IEM #Laboratory #Patterns
Upper lung zone preference is seen in:
- Inhaled particles: pneumoconiosis (silica or coal)
- Smoking related diseases
Upper lung zone ... (centrilobular emphysema ... bronchiolitis (RB-ILD ... HRCT #ChestCT #Differential ... #Table #Distribution
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 ... NodularPattern #Nodular #Pattern ... MultipleNodules #Nodules #Differential
Miliary Pattern - Chest Radiology
 • Miliary opacities are scattered, small (1 -4 mm) nodules
 •
Miliary Pattern ... mm) nodules • Diffusely ... throughout the lungs ... process or (rarely) diffuse ... PulmPEEPs #Miliary #Pattern
Whenever you see an area of increased density within the lung, it must be the result
density within the lung ... of these four patterns ... resulting in lobar, diffuse ... or multifocal ill-defined ... Consolidation #Patterns