Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart size is normal . The mediastinal contours are unremarkable . The hila are within normal limits , and there is no pulmonary vascular congestion . Patchy opacities are demonstrated within the right perihilar region as well as within the left lung base . No pleural effusion or pneumothorax is seen .
    OUTPUT:
    
Patchy opacities in right perihilar region and left lung base could reflect areas of infection .