Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is a dialysis catheter terminating in the right atrium . A pacemaker / ICD device appears unchanged . The cardiac , mediastinal and hilar contours appear stable including cardiomegaly . Mild perihilar congestive changes are stable . Minor atelectasis is suspected at the left lung base . There is no pleural effusion or pneumothorax .
    OUTPUT:
    
No convincing evidence for pneumonia .