Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Patient is status post median sternotomy and CABG . Left - sided AICD device is noted with leads in unchanged positions . Heart size remains mildly enlarged . The aorta is tortuous . Pulmonary vasculature is not engorged . Minimal blunting of the left costophrenic angle suggests a trace left pleural effusion . No focal consolidation or pneumothorax is present . No acute osseous abnormality is detected . Multilevel degenerative changes are seen within the imaged thoracic spine .
    OUTPUT:
    
Blunting of the left costophrenic angle suggestive of a trace left pleural effusion . No focal consolidation .