Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest were obtained . Study is without significant change since the prior study . Again there is bibasilar atelectasis / scarring . Small left base opacity is since at least ___ , consistent with scarring . The cardiac and mediastinal silhouettes are stable and unremarkable , as are the hilar contours . There is no pleural effusion or pneumothorax .
    OUTPUT:
    
No acute cardiopulmonary process .