Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Since prior , there is no significant interval change . Right upper lobe opacity likely reflects post radiation fibrosis or lymphangitic spread of tumor . Elevation of the left hemidiaphragm , more so than in ___ , may represent a subpulmonic effusion . Small right pleural effusion is unchanged . Heart and mediastinal contour are stable . There is no pneumothorax . Endotracheal and nasogastric tubes are unchanged in position .
    OUTPUT:
    
No significant interval change .