Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are clear . Cardiac silhouette is normal in size . Aorta is slightly tortuous . Prominence of the right hilus is unchanged . No pleural effusion no pneumothorax and no pulmonary edema . No rib fractures on this nondedicated radiograph .
    OUTPUT:
    
No evidence of acute cardiopulmonary process .