Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest demonstrate normal lung volumes . There are prominent interstitial markings bilaterally . The left hemidiaphragm is obscured . Bibasilar opacities are noted . Post-radiation changes with paramediastinal fibrosis is again seen . The hilar and mediastinal silhouettes are unchanged . Heart is slightly enlarged . Aortic arch calcifications are noted . There is no pneumothorax .
    OUTPUT:
    
Bibasilar opacities , atelectasis or infection in appropriate clinical setting . Prominent interstitial markings may reflect mild interstitial pulmonary edema .