Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is normal . Mediastinal and hilar contours are unremarkable . The pulmonary vascularity is not engorged . Consolidative opacity within the left lung base as well as patchy opacity within the right lung base and left upper lobe are concerning for multifocal pneumonia . No pleural effusion or pneumothorax is identified . No acute osseous abnormalities are seen . Remote right - sided rib fracture is present .
    OUTPUT:
    
Bibasilar and left upper lobe airspace opacities , worse in the lung left lung base , concerning for multifocal pneumonia .