Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral chest radiographs provided . The lungs are clear without focal consolidation , pleural effusion or pneumothorax . The cardiomediastinal silhouette is normal . There are old right - sided healing rib fractures . A minimally displaced sternal fracture demonstrates no appreciable callus formation .
    OUTPUT:
    
1 . No acute cardiopulmonary process . 2 . Minimally displaced sternal fracture without callus formation . Healing right rib fractures .