Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Study is somewhat limited by patient 's body habitus . Heart size is top normal . Cardiomediastinal silhouette and hilar contours are stable . Pulmonary vasculature is well defined and there is no evidence of interstitial edema . Lungs are clear . There is no pleural effusion or pneumothorax .
    OUTPUT:
    
No acute cardiopulmonary abnormality