Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There are bibasilar opacities , right greater than left . An opacity at the periphery of the right lung base corresponds to pulmonary infarct seen on CT . The heart is mildly enlarged . There is no pleural effusion or pneumothorax . Visualized upper abdomen is unremarkable . Degenerative changes are seen in the thoracic spine .
    OUTPUT:
    
Bibasilar opacities which may represent atelectasis / aspiration given known PE . Right lower lobe infarct better characterized on concurrent CT chest .