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 retrocardiac opacity consistent with atelectasis and small pleural effusion . There has been slight interval improvement in the degree of right pleural effusion , which may be due to patient positioning . Pulmonary edema has resolved . The endotracheal tube ends 3 .8 cm from the carina . A nasogastric tube courses into the stomach and out of the field of view . A left - sided PICC line ends at the cavoatrial junction .
    OUTPUT:
    
Left - sided PICC line ends at the cavoatrial junction .