Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is normal . Mediastinal and hilar contours are unremarkable . Pulmonary vasculature is normal . Patchy opacities are noted within the lung bases , more so on the right . No pleural effusion or pneumothorax is demonstrated . There are no acute osseous abnormalities .
    OUTPUT:
    
Patchy opacities in the lung bases , more so on the right , concerning for pneumonia or aspiration .