Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral chest views were obtained with the patient in upright position . Analysis is performed in direct comparison with the next preceding similar study of ___ . Previously described right subclavian approach Port - A - Cath system remains in unchanged position . The heart size and mediastinal structures are also unaltered and grossly within normal limits . The pulmonary vasculature is not congested . The previously described local pleural densities have further regressed , in particular a rather bulging prominence and thickening of the pleural space in the mid portion of the right lateral chest wall has regressed . Basal right - sided pleural effusion blunting the lateral pleural sinus and extending into the posterior pleural sinus and corresponding posterior pleural space remain unchanged . No new abnormalities are identified . As before , general impression of COPD persists .
    OUTPUT:
    
Mild regression of previously identified mostly loculated pleural effusions . No new pulmonary or cardiovascular abnormalities .