Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiomediastinal silhouette is normal . There is no overt pulmonary edema . There are patchy bibasilar opacities . There is no pleural effusion or pneumothorax . There is no acute osseous abnormality .
    OUTPUT:
    
Patchy bibasilar opacities , which could represent atelectasis however in the correct clinical setting pneumonia or aspiration should be considered .