Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiomediastinal and hilar contours are normal . There is a heterogeneous airspace opacity in the right lung base , concerning for pneumonia . There is mild pulmonary vascular congestion . Small bilateral pleural effusions and bibasilar atelectasis are present .
    OUTPUT:
    
Right basal opacity , concerning for pneumonia .