Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is moderate - to - severe cardiomegaly . The patient is status post CABG . Sternal wires are intact . Clips are noted in the mediastinum . The lungs are clear without consolidation or edema . There is no pleural effusion or pneumothorax . Very mild peripheral fibrosis is present at the bilateral bases .
    OUTPUT:
    
Moderate - to - severe cardiomegaly . No evidence of pneumonia or pulmonary edema .