Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral chest radiograph demonstrates no focal opacity concerning for pneumonia . Cardiomediastinal and hilar contours appear similar when compared to prior study dated ___ and there are within normal limits . There is no pleural effusion or pneumothorax . Osseous structures are without acute abnormality .
    OUTPUT:
    
No acute intrathoracic abnormality .