Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable upright view of the chest demonstrates low lung volumes . There are extensive airspace opacities bilaterally with relative sparing of the left upper lung ___ , which are new since prior study . The costophrenic angles are obscured , suggestive of trace pleural effusions . Cardiac size is difficult to discern due to adjacent pleural opacities , which is likely mildly enlarged . Right PIC catheter has been removed . No pneumothorax .
    OUTPUT:
    
Diffuse bilateral airspace opacities , significantly progressed with minimal sparing of the left upper lung ___ , ___ represent multifocal infection or edema . Likely trace bilateral pleural effusions .