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Lung Nodules - Differential Diagnosis by Distribution
 • Centrilobular: Hypersensitivity Pneumonitis, RB-ILD, Pneumoconiosis, Infectious Bronchiolitis, Vasculitis,
Lung Nodules - Differential ... Diagnosis by Distribution ... BrighamChiefs #Lung ... #Nodules #Differential ... #Diagnosis #Distribution
Batwing
A bilateral perihilar distribution of consolidation is also called a Batwing distribution.
The sparing of the periphery
bilateral perihilar distribution ... called a Batwing distribution ... periphery of the lung ... seen in chronic lung ... #CXR #Batwing #Differential
Shock - Differential Diagnosis Algorithm
Warm Extremities
 - Distributive Shock - Low JVP
Shock - Differential ... Extremities - Distributive ... Shock - Bibasilar Lung ... Decompensated Distributive ... #Hypotension #Differential
Upper lung zone preference is seen in:
- Inhaled particles: pneumoconiosis (silica or coal)
- Smoking related diseases
Upper lung zone ... HRCT #ChestCT #Differential ... #Table #Distribution
Algorithm for Diagnosis of Diffuse Cystic Lung Disease (DCLD)
Round, smooth cysts with normal lung parenchyma in
Diffuse Cystic Lung ... cysts with normal lung ... Diffuse distribution ... Diffuse #Cystic #Lung ... Algorithm #Diagnosis #differential
Bronchiectasis - Permanent dilation of an airway
WHAT CAN YOU SEE ON CT?
1) Lack of tapering of
plugging WHAT IS THE DISTRIBUTION ... segment or lobe of lung ... involving both lungs ... pulmonary #diagnosis #differential
Notice that there are multiple densities in both lungs.
The larger ones are ill-defined and maybe there
densities in both lungs ... is a peripheral distribution ... dealing with the differential ... CXR #Peripheral #Distribution
Ground-glass opacity
Ground-glass opacity (GGO) represents:
- Filling of the alveolar spaces with pus, edema, hemorrhage, inflammation or
or interstitial lung ... Centrilobular distribution ... #GroundGlass #Differential
Noncardiogenic Pulmonary Edema - Differential Diagnosis Framework

NCPE Pathophysiology:
Noncardiogenic pulmonary edema occurs because of excessive pulmonary capillary
Pulmonary Edema - Differential ... or peripheral distribution ... Transfusion-related acute lung ... #edema #NCPE #differential
UIP with honeycombing (left) and chronic HP (right)
Differential diagnosis of Hypersensitivity Pneumonitis.
Subacute stage:
- RB-ILD: seen in
chronic HP (right) Differential ... strong lower zone distribution ... throughout the whole lung