Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is normal . The patient is status post median sternotomy and aortic valve replacement . The aorta is tortuous . Pulmonary vasculature is not engorged . Scarring is noted within both lung apices . No pleural effusion , focal consolidation or pneumothorax is identified . The osseous structures are diffusely demineralized with moderate to severe multilevel degenerative changes noted in the imaged thoracic spine . Remote fracture of the distal left clavicle is noted .
    OUTPUT:
    
No acute cardiopulmonary abnormality .