Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable single frontal chest radiograph was obtained . A left chest tube has been removed . There is no appreciable pneumothorax . A right IJ terminates in the low SVC . There are persistent low lung volumes with bibasilar atelectasis , more pronounced on the left side . Persistent mild pulmonary edema is unchanged . Cardiomegaly and postoperative mediastinal widening are stable .
    OUTPUT:
    
1 . No appreciable pneumothorax after left chest tube removal . 2 . Persistent low lung volumes with bibasilar atelectasis and mild pulmonary edema .