Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There has been interval placement of a NG tube , which projects along the expected location of the gastric fundus . However , the tip is not visualized in this examination . As compared to prior chest radiograph from ___ , there has been no significant change . The heart size is normal . The mediastinal and hilar structures are normal . Again seen are nodular - appearing densities in the left lower lobe . There are no pleural effusions or pneumothorax .
    OUTPUT:
    
1 . Interval placement of NG tube which projects along the expected location of the gastric fundus . Tip is not included in this examination . 2 . Unchanged nodular densities in the left lower lobe , consistent with previously identified rheumatoid nodules . These findings were discussed with Dr . ___ by Dr . ___ via telephone on ___ at 11 :55 a .m . , at the time of discovery .