Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral radiographs of the chest . The lungs are mildly underinflated , but there is no focal airspace consolidation . The cardiomediastinal silhouette and hilar contours are normal . Pulmonary vascularity is normal and symmetric without pulmonary edema . There is no pleural effusion or pneumothorax detected .
    OUTPUT:
    
No acute cardiopulmonary abnormality .