Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable AP upright chest radiograph ___ at 09 :58 is submitted .
    OUTPUT:
    
Lung volumes remain low with patchy bibasilar opacities suggestive of atelectasis , although pneumonia can not be excluded . Small associated left pleural effusion . Pulmonary vascular crowding due to low lung volumes with no overt pulmonary edema . No obvious pneumothorax , although the patient 's mandible obscures part of the apices . Interval removal of the right internal jugular central line .