11 results
Central distribution is seen in sarcoidosis and cardiogenic pulmonary edema.
Peripheral distribution is mainly seen in cryptogenic
Peripheral distribution ... ), chronic eosinophilic ... #Diagnosis #Radiology ... #Pulmonary #HRCT ... #RadiologyAssistant
Upper lung zone preference is seen in:
- Inhaled particles: pneumoconiosis (silica or coal)
- Smoking related diseases
bronchiolitis (RB-ILD ... edema #Diagnosis ... #Radiology #Pulmonary ... #HRCT #ChestCT ... #Distribution #
Differential diagnosis
The table summarizes the most common diseases, that present with consolidation.
Chronic diseases are indicated in
Differential diagnosis ... the pattern of distribution ... called cryptogenic (COP ... #Diagnosis #Radiology ... #Pulmonary #CXR
Batwing
A bilateral perihilar distribution of consolidation is also called a Batwing distribution.
The sparing of the periphery
most typical of pulmonary ... frequently seen in chronic ... #Diagnosis #Radiology ... #CXR #Batwing #Differential ... #RadiologyAssistant
It is very important to differentiate between acute consolidation and chronic consolidation, because it will limit
and chronic consolidation ... with multiple peripheral ... #Diagnosis #Radiology ... #Pulmonary #CXR ... #Differential #RadiologyAssistant
Notice that there are multiple densities in both lungs.
The larger ones are ill-defined and maybe there
distribution. ... dealing with the differential ... diagnosis of chronic ... #Clinical #Radiology ... OrganizingPneumonia #BOOP #RadiologyAssistant
On the left two cases with chronic consolidation. 
There are patchy non-segmental consolidations in a subpleural
subpleural and peripheral ... distribution. ... The final diagnosis ... pneumonia the HRCT ... OrganizingPneumonia #RadiologyAssistant
Cryptogenic Organizing Pneumonia (COP)

Cryptogenic Organizing Pneumonia Overview:
 • Idiopathic form of organizing pneumonia
 • formerly BOOP
Imaging: • CXR: Peripheral ... distribution of ... , cavities • HRCT ... organizing pneumonia, Chronic ... #ILD #diagnosis
UIP with honeycombing (left) and chronic HP (right)
Differential diagnosis of Hypersensitivity Pneumonitis.
Subacute stage:
- RB-ILD: seen in
HP (right) Differential ... centrilobular emphysema ... show very similar HRCT ... strong lower zone distribution ... #RadiologyAssistant
Basic Interpretation
A structured approach to interpretation of HRCT involves the following questions:
What is the dominant HR-pattern:
reticular
nodular
high
(ground-glass, consolidation ... low attenuation (emphysema ... central versus peripheral ... #Radiology #Pulmonary ... #RadiologyAssistant