Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Single AP view of the chest provided . Normal positioning a left - sided pacemaker and leads . Lungs are grossly clear . There is mild indistinctness of the pulmonary vasculature . No pleural effusion or pneumothorax . Hilar and cardiomediastinal contours are normal . There is mild elevation of the left hemidiaphragm and a large gastric bubble . There is a small sliver of air immediately inferior to the lateral aspect of left hemidiaphragm .
    OUTPUT:
    
1 . There is mild elevation of the left hemidiaphragm and a large gastric bubble . Of note , there is a small sliver of air immediately inferior to the lateral aspect of left hemidiaphragm . This is probably projectional , however clinical assessment for viscus perforation is recommended . 2 . Mild indistinctness of the pulmonary vasculature is consistent with mild pulmonary edema .