Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP upright and lateral chest radiographs were obtained . Comparison is made to prior study dated ___ . Lungs appear symmetrically inflated . Cardiomediastinal and hilar contours are stable in appearance . Increased periobronchial right lower lung zone density may reflect early pneumonia or alternatively aspiration . Again identified is a left Port - A - Cath , its tip within the mid superior vena cava in unchanged position .
    OUTPUT:
    
Peribronchial right lower lung zone opacities may reflect early pneumonia in the correct clinical setting or alternatively aspiration .