Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Mild to moderate enlargement of the cardiac silhouette is re - demonstrated with dense mitral annular calcifications . Aortic knob calcifications are also re - demonstrated . The mediastinal and hilar contours are otherwise unremarkable . The pulmonary vasculature is not engorged . Consolidative opacity in the right lung base , along with probable patchy retrocardiac opacity likely reflect areas of pneumonia or aspiration . No pleural effusion or pneumothorax is present . Assessment of the left apex is obscured by external devices . Remote posterior rib fracture is again noted .
    OUTPUT:
    
Bibasilar airspace opacities , more pronounced on the right , concerning for pneumonia or aspiration .