Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Midline sternotomy wires and mediastinal clips are again noted . There is mild cardiomegaly . The lung volumes are low causing bronchovascular crowding . There is no focal consolidation , pleural effusion , pneumothorax , or pulmonary edema . Overall , there is little change from the prior study dated ___ .
    OUTPUT:
    
No evidence of acute cardiopulmonary process .