Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral chest radiograph demonstrates clear lungs without evidence to suggest pneumonia . There is no pleural effusion . There is no pneumothorax . Cardiomediastinal silhouette is within normal limits . There is no air under the right hemidiaphragm .
    OUTPUT:
    
No acute intrathoracic abnormality .