Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The right internal jugular approach Swan - Ganz catheter loops in the right atrium and terminates in the main pulmonary artery . A defibrillator wire ends in the right atrium . Linear opacity in the right lung base is most consistent with atelectasis . No pleural effusion or pneumothorax identified . The cardiac silhouette is enlarged but unchanged .
    OUTPUT:
    
Swan Ganz catheter loops in the right atrium and ends in the main pulmonary artery . Careful repositioning is recommended .