Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest demonstrate hyperexpanded lungs and increased AP diameter of the chest , suggestive of underlying chronic obstructive pulmonary disease . There is no focal consolidation , pleural effusion or pneumothorax . Hilar and mediastinal silhouettes are unremarkable . Heart size is top normal . The patient is status post mediastinal sternotomy and CABG . A superior sternotomy wire is fractured . There is no pulmonary edema . Mild - to - moderate dextroscoliosis of the thoracic spine is noted .
    OUTPUT:
    
No evidence of acute cardiopulmonary process .