Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The right lung base opacities are improved since ___ , but worse from earlier same - day chest radiograph . Opacifications in the left lung base appear improved since prior exam but this may be technical . The heart size is normal . No pneumothorax or large pleural effusion . The endotracheal to is seen with tip measuring 2 .1 cm above the carina . A right PICC line is seen with the tip ending in the lower SVC . A feeding tube is seen in the region of the stomach .
    OUTPUT:
    
1 . Right lung base opacities are improved since ___ but appear worse since earlier same - day chest radiograph . 2 . Left lung base opacities appear improved since earlier same - day exam but this may be technical .