Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Left - sided Port - A - Cath distal tip is similar position as compared to prior studies . Enteric tube courses below the level the diaphragm , at terminating in the expected location of the stomach . Patchy left base opacity is re - demonstrated . No pleural effusion or pneumothorax is seen . The cardiac and mediastinal silhouettes are stable .
    OUTPUT:
    
Patchy left base opacity may be chronic .