Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are low . Diffuse interstitial changes with honeycombing , predominating the lower lung zones , are better seen on the recent chest CT . There is superimposed mild to moderate pulmonary edema . Small bilateral pleural effusions are presumed . The heart size is difficult to assess given the diffuse parenchymal abnormalities . No pneumothorax .
    OUTPUT:
    
Mild to moderate pulmonary edema superimposed on chronic lung disease . The distribution of fibrosis raises the possibility of UIP .