Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Severe cardiomegaly is unchanged . A cardiac conduction device and leads are in unchanged position . The patient is status post cardiac valve repair . Pulmonary edema is moderate and mildly improved . Patchy parenchymal opacities are slightly more subtle than on prior examinations .
    OUTPUT:
    
Moderate pulmonary edema is mildly improved and underlying parenchymal opacities are slightly more subtle .