Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There are subtle opacities in the right upper lobe and left lower lobe , which may reflect infection in the correct clinical setting . No pleural effusions or pneumothorax . No pulmonary edema . Cardiomediastinal and hilar silhouettes are normal .
    OUTPUT:
    
Subtle opacities in the right upper lobe and left lower lobe may reflect infectious process , in the correct clinical setting . Recommend correlation for fever and leukocytosis .