Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral radiographs of the chest demonstrate normal heart size . The cardiomediastinal silhouette and hilar contours are normal . Bibasilar chronic interstitial changes are noted with an increased focal opacity in the right lower lobe concerning for infection . Small pleural effusions bilaterally . No pneumothorax . Mild hyperinflation . No displaced rib fracture identified . Known sclerotic metastases better assessed on prior cross - sectional imaging .
    OUTPUT:
    
Likely right lower lobe pneumonia .