Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are hyperinflated . There is mild scarring at the left lung base abutting the diaphragm , similar to prior CT . There is however superimposed hazy left basilar opacity in the retrocardiac region which localizes posteriorly on the lateral view . Left apical pleural based scarring with associated volume loss is again noted . Prior left - sided Port - A - Cath is no longer visualized . Nipple shadows are noted over the lung bases . The lungs are otherwise clear . No acute osseous abnormalities .
    OUTPUT:
    
Subtle opacity in the left lower lobe suspicious for pneumonia .