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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 ... Lobar consolidation ... opacities - Fine Nodular ... Diagnosis #Clinical #Radiology ... #Patterns #RadiologyAssistant
Nodular pattern
1. Hypersensitivity pneumonitis: ill defined centrilobular nodules.
2. Miliary TB: random nodules
3. Sarcoidosis: nodules with perilymphatic
Nodular pattern ... Miliary TB: random ... #Clinical #Radiology ... #HRCT #CTChest ... #Nodular #Pattern
Algorithm for nodular pattern
The algorithm to distinguish perilymphatic, random and centrilobular nodules is the following:
- Look
pattern The algorithm ... are visible, the pattern ... #Diagnosis #Radiology ... #Pulmonary #HRCT ... #Pattern #MultipleNodules
The distribution of nodules shown on HRCT is the most important factor in making an accurate
pattern. ... #Diagnosis #Radiology ... #Pattern #Distribution ... Perilymphatic #Comparison ... #Diagram #RadiologyAssistant
Nodular pattern(2)
1. Sarcoidosis: nodules with perilymphatic distribution, along fissures, adenopathy.
2. TB: Tree-in-bud appearance in a patient
Nodular pattern( ... #Clinical #Radiology ... #HRCT #CTChest ... #Nodular #Pattern ... #Comparison #Table
High Attenuation pattern 
1. Chronic eosinophilic pneumonia with peripheral areas of ground glass opacity.
2. Sarcoid end-stage
High Attenuation pattern ... #Clinical #Radiology ... #HRCT #CTChest ... HighAttenuation #Pattern ... #Comparison #Table
High Attenuation pattern (2) 
1. Non specific interstitial pneumonitis (NSIP): ground glass with traction bronchiectasis, no
High Attenuation pattern ... #Clinical #Radiology ... #HRCT #CTChest ... HighAttenuation #Pattern ... #Comparison #Table
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 ... : reticular nodular ... (ground-glass, consolidation ... perilymphatic or random ... bronchiectasis) #Diagnosis #Radiology
On the left some diseases with a nodular pattern.
1. Hypersensitivity pneumonitis: ill defined centrilobular nodules.
2. Miliary
pattern. 1. ... Miliary TB: random ... Clinical #Diagnosis #Radiology ... #Pattern #NodularPattern ... #Differential #Comparison
Whenever you see an area of increased density within the lung, it must be the result
of these four patterns ... . 1- Consolidation ... substances resulting in lobar ... #Diagnosis #Radiology ... #Patterns #RadiologyAssistant