Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are clear . Mild cardiomegaly is stable . The hilar and mediastinal contours are otherwise normal . Median sternotomy wires are present as well as mediastinal clips , consistent with prior cardiac surgery . There is no pneumothorax or pleural effusion . Pulmonary vascularity is normal . Again there is concern for prior right ___-___ anterolateral rib fractures .
    OUTPUT:
    
No acute cardiopulmonary process .