Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiomediastinal silhouette is enlarged and stable . Engorgement of the pulmonary vasculature is present on today 's exam consistent with pulmonary edema . The relative asymmetry of the right lower lobe opacity raises concern for overlying pneumonia . Patient is status post median sternotomy . Battery pack and pacemaker wires are in unchanged position . No pleural effusion is noted .
    OUTPUT:
    
Cardiomegaly and pulmonary edema . Relative asymmetry of the right lower lobe opacity raises concern for overlying pneumonia .