Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest were obtained . Bilateral lower lobe linear opacities are consistent with atelectasis or scarring . The lungs are otherwise clear without focal consolidation , pleural effusion , or pneumothorax . Heart size and cardiomediastinal contours are stable . A left breast calcification is stable and better assessed on previous mammogram .
    OUTPUT:
    
No acute cardiopulmonary process .