Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A tracheostomy tube is present with the tip approximately 1 .5 cm from the carina . This is similar to the prior exam . The lungs are clear without consolidation or edema . There is no pleural effusion or pneumothorax . The cardiomediastinal silhouette is normal . No rib fracture is identified .
    OUTPUT:
    
No evidence of pneumonia .