Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Compared with the prior radiograph , no change the positioning of the left - sided dual - lumen Port - A - Cath , with tip projecting at the upper to mid SVC . Scarring and reticular thickening in the bilateral upper lungs is unchanged since at least ___ . Faint opacity in the left lung base may represent atelectasis . Superimposed infection is not excluded . Cardiomediastinal silhouette is normal .
    OUTPUT:
    
No acute cardiopulmonary process . Left - sided Port - A - Cath tip projects at the upper to mid SVC .