Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable semi-upright radiograph of the chest demonstrates low lung volumes with resulting bronchovascular crowding . There is persistent increased opacification at the left base , likely secondary to pleural effusion with adjacent atelectasis ; however , superimposed infection can not be excluded . There is evidence of mild to moderate pulmonary edema . There is no pneumothorax . There is pneumoperitoneum present with air below the right hemidiaphragm .
    OUTPUT:
    
1 . There is pneumoperitoneum present with air below the right hemidiaphragm . 2 . Small left - sided pleural effusion with adjacent atelectasis . 3 . Mild - moderate pulmonary edema .