Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is normal . Mediastinal and hilar contours are normal . Pulmonary vasculature is not engorged . Patchy opacities are noted in the lung bases . No pleural effusion or pneumothorax is present . There are no acute osseous abnormalities .
    OUTPUT:
    
Patchy opacities in the lung bases may reflect early infection in the correct clinical setting .