Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are symmetrically well expanded and well aerated without focal consolidation , pleural effusion or pneumothorax . The pulmonary vasculature is not engorged . The cardiac silhouette is top normal in size , but stable . The mediastinal and hilar contours are within normal limits . The central tracheobronchial tree is midline and appears patent .
    OUTPUT:
    
No acute cardiopulmonary process .