Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP upright portable chest radiograph obtained . Patient is slightly rotated which limits evaluation . Although allowing for this , the cardiomediastinal silhouette appears normal and stable . The lungs appear clear bilaterally without signs of pneumonia or CHF . No pleural effusion or pneumothorax is seen . Bony structures appear intact .
    OUTPUT:
    
No acute intrathoracic process .