Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Mild cardiomegaly is been stable compared to exams dating back to at least ___ . There is mild pulmonary vascular congestion , otherwise the hilar and mediastinal contours are normal . No focal consolidations concerning for pneumonia identified . There is no pleural effusion pneumothorax . Sternal wires and clips projected over the right lung apex , are overall unchanged in appearance compared to the prior exam . The visualized osseous structures are unremarkable .
    OUTPUT:
    
Mild pulmonary edema .