Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Tracheostomy tube is in stable position . Left chest wall port seen with catheter tip in the lower SVC . The lungs remain clear , without focal consolidation or effusion despite low lung volumes . The cardiomediastinal silhouette is within normal limits . Chronic changes of the right third rib are identified . No acute osseous abnormalities . Distention of the bowel in left upper quadrant , presumably colon is similar compared to prior .
    OUTPUT:
    
No acute cardiopulmonary process .