Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral chest radiographs demonstrate hyperexpanded and clear lungs without a focal opacity convincing for pneumonia . Cardiomediastinal and hilar contours are within normal limits . A right chest port terminates within the right atrium . There is no pleural effusion or pneumothorax . Mild compression deformity at the thoracolumbar junction is of indeterminate age .
    OUTPUT:
    
No acute intrathoracic abnormality .