Batwing
A bilateral perihilar distribution of consolidation is also called a Batwing distribution.
The sparing of the periphery of the lung is attributed to a better lymphatic drainage in this area.
It is most typical of pulmonary edema, both cardiogenic and non-cardiogenic.
Sometimes it is seen in pneumonias.
Reverse Batwing
Peripheral or subpleural consolidation is called reverse Batwing distribution.
It is frequently seen in chronic lung disease. #Diagnosis #Radiology #CXR #Batwing #Differential #RadiologyAssistant