Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size top normal . Evidence of previous CABG . No vascular congestion . No pulmonary edema . No suspicious pulmonary nodules or masses . No pleural effusions . Moderate hyperinflation . Spondylotic changes of the thoracic spine .
    OUTPUT:
    
No pneumonia . Moderate pulmonary hyperinflation suggesting COPD .