Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are mildly hyperexpanded but clear bedsides biapical scarring . The heart is not enlarged . The mediastinal and hilar contours are normal . There is no pleural effusion or pneumothorax . There is rightward curvature centered over the thoracolumbar spine .
    OUTPUT:
    
Mild hyperexpansion of the lungs which are otherwise clear . There is no evidence of pneumonia .