Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There has been interval removal of a right internal jugular venous catheter . Sternotomy wires are stable . The cardiomediastinal silhouette is unchanged in size from ___ and postoperative cardiac and mediastinal changes are seen , improving from the prior exam . Lung volumes are low and there is a persistent retrocardiac opacity . Additional opacity involving the right lower lobe is seen and also not significantly changed . No large pneumothorax is identified .
    OUTPUT:
    
Bibasilar opacities are re - demonstrated and unchanged . No pneumothorax . No significant change .