Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Upright PA and lateral radiograph of the chest . The lungs are normally expanded and clear , without focal airspace consolidation . The cardiomediastinal silhouette and hilar contours are normal . There is slight unfolding of the aorta . There is no pleural effusion or pneumothorax . The osseous structures are grossly intact .
    OUTPUT:
    
No acute cardiopulmonary abnormality . No evidence of pneumonia .