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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 ... - Multifocal ill-defined ... Interstitial - Reticular ... opacities - Fine Nodular ... #Patterns #RadiologyAssistant
Differential diagnosis on HRCT
Most of our knowledge about imaging findings in interstitial lung disease comes from
four patterns: ... reticular, nodular ... low attenuation (table ... The cystic pattern ... pattern on a CXR
Nodular pattern
1. Hypersensitivity pneumonitis: ill defined centrilobular nodules.
2. Miliary TB: random nodules
3. Sarcoidosis: nodules with perilymphatic
Nodular pattern ... Hypersensitivity pneumonitis: ill ... Clinical #Radiology #HRCT ... #Pattern #Comparison ... #Table #RadiologyAssistant
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 ... Interpretation #Algorithm ... #ILD #RadiologyAssistant
Whenever you see an area of increased density within the lung, it must be the result
of these four patterns ... . 1- Consolidation ... or multifocal ill-defined ... fine or coarse reticular ... #Patterns #RadiologyAssistant
Figure 3 HRCT-LUS correlation in normal lung, pulmonary congestion, rheumatoid lung disease, idiopathic pulmonary fibrosis.
Notes: (A)
Figure 3 HRCT-LUS ... artifact); (G) UIP pattern ... subpleural, basal reticular ... #Correlation #Table ... #ILD #Findings
Cryptogenic Organizing Pneumonia (COP)

Cryptogenic Organizing Pneumonia Overview:
 • Idiopathic form of organizing pneumonia
 • formerly BOOP
and GG pattern, ... irregular lines, nodular ... , cavities • HRCT ... : patchy consolidation ... BOOP #pulmonary #ILD
Septal thickening
Thickening of the lung interstitium by fluid, fibrous tissue, or infiltration by cells results in
cells results in a pattern ... of reticular opacities ... differential diagnosis (Table ... Nodular or irregular ... Radiology #Pulmonary #HRCT