Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: No focal consolidation , pleural effusion , pneumothorax , or pulmonary edema is seen . Linear densities at both lung bases are atelectasis are scarring . Heart and mediastinal contours are within normal limits . Cervical spine hardware is partially imaged . The aorta is tortuous .
    OUTPUT:
    
No radiographic evidence for acute cardiopulmonary process .