Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A right - sided Port - A - Cath is in unchanged position . The cardiomediastinal and hilar contours are within normal limits and stable . The lungs are hyperinflated , similar in appearance to prior exams . A subtle opacity at the base of the left lung persists but appears improved from ___ . Increased opacity at the base of the right lung appears increased from the prior examination and may reflect a focus of infection , however a correlate opacity is not definitely identified on the lateral view . No pneumothorax . Biapical scarring is re - demonstrated .
    OUTPUT:
    
Subtly increased opacity at the base of the right lung may reflect infection however a correlate is not definitely identified on the lateral view . Interval improvement of the left basal opacity from ___ .