Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Patient is post CABG , with intact median sternotomy wires . Compared with the prior radiograph , no significant change . Lungs are grossly clear without focal consolidation or pneumothorax . Blunting of the left costophrenic angle is unchanged , previously described is possibly pleural thickening . Heart size is stable .
    OUTPUT:
    
No acute cardiopulmonary process .