Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is streaky density at the lung bases consistent with subsegmental atelectasis . There is no definite focal consolidation . The patient is status post median sternotomy as before . Mediastinal structures are unchanged . An endotracheal tube and right internal jugular sheath remain in place . A nasogastric tube has been advanced and now terminates below the diaphragm in the region of the gastric fundus or body .
    OUTPUT:
    
Tube and line placement as described . Bibasilar subsegmental atelectasis . No definite effusion .