Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Top normal heart size is exaggerated by lower than expected lung volumes for a patient of this age . The cardiomediastinal and hilar contours are otherwise normal . The lungs are well expanded and clear , without consolidation , edema , pleural effusion or pneumothorax .
    OUTPUT:
    
Heart size top normal , chronicity indeterminate .