Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A prosthetic valve is present . No sternotomy wires are seen , though multiple ___ are noted centered around the mediastinal midline . Three ___ .6 mm cylindrical opacities are seen , 2 overlying the cardiomediastinal silhouette and 1 overlying the L1 vertebral body in the midline . These are similar to the previous study . The intra-aortic balloon pump is no longer visualized . Scattered gauzes are seen , 1 adjacent to the left hilum , 1 overlying the cardiac silhouette , and 1 near the level of the GE junction . An additional tape overlies the upper mediastinum , near the aortic knob . A Swan - Ganz catheter is present from an inferior approach and overlies the proximal right pulmonary artery There appear to be ___ mediastinal drains . There are 2 chest tubes , 1 on each side . An ET tube is present , tip approximately 4 .9 cm above the carina . An NG tube , which courses slightly to the right of midline , is present , tip beneath diaphragm overlying the stomach . The sideport lies in the region of the GE junction , probably just beyond it . The cardiomediastinal silhouette is prominent , compatible with recent surgery , similar to the prior film . Compared to the most recent prior film , the hazy opacity in the right midzone is improved considerably . Hazy retrocardiac and left perihilar opacity is similar to prior . There is upper zone redistribution mild vascular plethora , without other evidence of CHF . No effusion is seen on the frontal view . Large ( 3 .4 x 4 .1 cm ) with calcific calcification in the right upper quadrant likely represents a large gallstone .
    OUTPUT:
    
Multiple findings related to mediastinal surgery , detailed above . The intra-aortic balloon pump is no longer visualized . Gauzes are noted . Mild vascular plethora , consistent with mild CHF . Interval improvement in previously seen right lung hazy opacity , question resolving pulmonary edema . Mild retrocardiac opacity and left perihilar persist . No new consolidation . No effusion . No pneumothorax detected . Large gallstone noted .