On the left another case of UIP. The lower zone predominance is demonstrated when you scroll through the images. Notice the ground glass opacity in the left lower lobe as a result of fibrous tissue replacing the air in the alveoli. #Clinical #Radiology #CTChest #UIP #UsualInterstitialPneumonia #TractionBronchiectasis #Bronchiectasis #Honeycombing #RadiologyAssistant