Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A small right pleural effusion is probably improved compared to ___ . Opacification at the right lung apex and the left perihilar region is overall unchanged . Hazy opacification in the right middle lung is more conspicuous on today 's exam and may have been present on the prior exam but not as well seen . The left chest tube has since been removed . No change in the overall appearance of the right - sided Port - A - Cath with its tip ending in the mid SVC . Stable appearance of the cardiac and mediastinal contour . Median sternotomy wires appear intact and unchanged in position .
    OUTPUT:
    
1 . Right middle lung opacity is more conspicious . 2 . Probable interval improvement in the small right pleural effusion . 3 . Otherwise , no significant interval change .