Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The left PICC line is in the right atrium and retraction by 5 .4 cm is recommended for proper positioning . Retrocardiac opacity has increased in comparison to prior study and likely represents substantial volume loss of left lower lobe . There is continued pulmonary venous engorgement . No pneumothorax is identified but there is a small left pleural effusion . Cardiomediastinal and hilar contours are otherwise unremarkable . There are however lucent foci under the right hemidiaphragm which raise suspicion for free air under the hemidiaphragm in the proper clinical setting . There continues to be dilatation of the small bowel with air as noted previously .
    OUTPUT:
    
1 . Left - sided PICC line terminates in the right atrium and retraction by 5 .4 cm is recommended for proper positioning . 2 . Lucent foci are noted under the right hemidiaphragm and raise suspicion for free air in the proper clinical setting . Correlation with symptoms is recommended and a CT Abodmen may be performed for further assessment if necessary . 3 . Retrocardiac opacity on the left has increased and likely represents atelectasis . 4 . Continued gasseous distention of the small bowel with air . These findings were discussed by Dr . ___ with Dr . ___ ___ telephone at 10 :45 am on ___ .