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 and the lungs appear clear . Calcifications are noted within the left breast . There is no pleural effusion or pneumothorax . Multiple old bilateral rib fractures are noted . The patient is status post ORIF of a proximal humeral fracture without gross hardware complications evident , but the hardware is not fully assessed on this exam . There are mild degenerative changes in the thoracic spine .
    OUTPUT:
    
No acute cardiopulmonary abnormality . No displaced fractures identified .