Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is normal . Mediastinal and hilar contours are unremarkable . Pulmonary vasculature is normal . Linear opacity in the left lung base is new from prior , and may relate to scarring as there are multiple chronic rib deformities noted in the left chest wall . Right lung is clear . No focal consolidation , pleural effusion or pneumothorax is seen . Fusion hardware within the cervical spine is incompletely assessed .
    OUTPUT:
    
No acute cardiopulmonary abnormality .