Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A left - sided Port - A - Cath terminates at the lower SVC . Since the ___ examination , there has been slight improvement of a linear right middle lobe opacity , which may represent a mucus - impacted bronchus or a resolving consolidation . No new consolidation , pleural effusion , or pneumothorax is seen . The cardiac and mediastinal contours are unchanged .
    OUTPUT:
    
Improved right middle lobe linear opacity , which may represent an impacted bronchus . The initial findings were discussed by Dr . ___ with Dr . ___ ___ telephone at 2 :52 p .m . on ___ .