Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are low which accentuates the size of the cardiac silhouette which appears mildly enlarged . Widening of the mediastinum is due to the presence of low lung volumes . Crowding of bronchovascular structures is present without overt pulmonary edema . Patchy bibasilar opacities likely reflect atelectasis , without focal consolidation . No pleural effusion or pneumothorax is identified . No acute osseous abnormalities detected .
    OUTPUT:
    
Low lung volumes with bibasilar patchy opacities , likely atelectasis . No pulmonary edema .