Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest are provided . There are unchanged spinal catheters seen projecting over the posterior midline . There is a right chest tube with its tip positioned at the right pulmonary hilum . The lungs are clear without signs of pneumonia or CHF . No effusion or pneumothorax is seen . Cardiomediastinal silhouette appears normal . Bony structures are intact . Gas-distended loops of bowel are noted in the upper abdomen without definite signs of free air . Clips in the right mid abdomen noted .
    OUTPUT:
    
No signs of pneumonia .