Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are low which accentuate the size of the cardiac silhouette which remains moderately enlarged . Mediastinal contour is similar . Crowding of bronchovascular structures is demonstrated without overt pulmonary edema . Patchy bibasilar airspace opacities may reflect atelectasis in the setting of low lung volumes . No pneumothorax or pleural effusion is identified . There are no acute osseous abnormalities . Electronic devices project over the anterior aspects of the chest bilaterally with leads coursing cephalad into the neck compatible with deep brain stimulator devices .
    OUTPUT:
    
Low lung volumes with patchy bibasilar airspace opacities , potentially atelectasis , but infection or aspiration can not be excluded .