Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A right Port - A - Cath ends in the low SVC versus uppermost portion of the right atrium , not significantly changed . Lung volumes are slightly low . The heart size is normal . There are no pleural effusions . Post-esophagectomy changes along the right perihilar and right mediastinal regions are not significantly changed .
    OUTPUT:
    
Stable post-surgical changes , status post esophagectomy . No acute cardiac or pulmonary process .