Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: No focal opacity to suggest pneumonia is seen . No pleural effusion or pneumothorax is present . Mild interstitial prominence is similar to prior examinations . The heart size is normal . A large bore dual - lumen right - sided central venous catheter is unchanged with the distal tip reaching the right atrium .
    OUTPUT:
    
No evidence of pneumonia .