Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Subtle hazy opacities left lung base may represent early developing infiltrate in the appropriate clinical setting , not definitely identified on prior radiograph ___ and CT ___ of the very low lung bases right lung clear . Small esophageal hiatal hernia , more apparent . Normal heart size , pulmonary vascularity . No effusion . Surgical clips left breast .
    OUTPUT:
    
Subtle hazy opacity left lung base may represent developing early infiltrate in the appropriate clinical setting . If clinical symptoms persist , follow - up radiograph in 48 hr recommended .