Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest . Heart size and cardiomediastinal contours are normal . Aortic knob calcification and tortuous aortic contour are stable . Streaky left lower lobe opacity is similar to prior and consistent with atelectasis or scarring . The lungs are otherwise clear without focal consolidation , pleural effusion , or pneumothorax . Contraction of the right wrist appears similar to ___ .
    OUTPUT:
    
No acute cardiopulmonary process .