Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are well expanded and show mild interstitial opacities , unchanged . The cardiac silhouette is moderately enlarged with the left atrium enlarged . The mediastinal silhouettes are normal . The right hilar contour is prominent , unchanged , likely related to a enlarged pulmonary artery . No pleural effusion or pneumothorax is present .
    OUTPUT:
    
Possible mild pulmonary edema with unchanged mild cardiomegaly . No pleural effusion . Enlarged left atrium suggests that there might be a component of mitral valve disease .