On the left a patient with DIP.
The HRCT shows diffuse areas of ground-glass density in the lower lobes and some mosaic pattern as the sole abnormality. 
Reticular abnormalities and signs of fibrosis are typically absent.
These abnormalities are usually reversible and will disappear upon cessation of smoking #Clinical #Radiology #CTChest #DIP #DesquamativeInterstitialPneumonia #ILD #RadiologyAssistant