Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There are dilated loops of colon superimposing bilateral lung base . The dilated colon is a chronic finding , which was also seen on ___ . Visualized lungs are clear . There is no pleural effusion or pneumothorax . Cardiomediastinal silhouette is normal size .
    OUTPUT:
    
No evidence of pneumonia . Chronically dilated loops of colon .