Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are clear . The heart size is normal . The mediastinal contours are normal . There are no pleural effusions . No pneumothorax is seen . Elevation of the right hemidiaphragm is increased compared to the prior study from ___ . Curvilinear lucency under the left hemidiaphragm is concerning for pneumoperitoneum .
    OUTPUT:
    
1 . No acute cardiac or pulmonary process . 2 . Findings concerning for pneumoperitoneum . A CT of the abdomen and pelvis had already been ordered at the time of this dictation . After discussing impression point # 2 with Dr . ___ at 5 :54 a .m . via telephone on ___ , subsequent CT demonstrated that the left subdiaphragmatic air was actually in the stomach . There was no pneumoperioneum on CT .