Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiac , mediastinal and hilar contours are unchanged , with the heart size within normal limits . Mild atherosclerotic calcifications are seen in the aortic knob . The pulmonary vasculature is normal . Linear opacities within the left lung base likely reflect subsegmental atelectasis . No focal consolidation , pleural effusion or pneumothorax is present . Vertebra plana of the T11 vertebral body is re - demonstrated . Remote fracture of the distal right clavicle is also noted .
    OUTPUT:
    
No acute cardiopulmonary process .