Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest were obtained . The heart is of normal size with stable cardiomediastinal contours . The aorta is mildly tortuous , similar to prior . Lungs are clear . No pleural effusion or pneumothorax . Pulmonary vascular markings are normal . No radiopaque foreign body .
    OUTPUT:
    
No evidence for acute cardiopulmonary process .