Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A single sternotomy wire is fractured . Mediastinal clips and cervical clips are present . The heart is top - normal in size but unchanged . Minimally increased interstitial markings appear chronic . No pleural effusion , pneumothorax or focal airspace consolidation . Mediastinal and hilar contours are unchanged .
    OUTPUT:
    
No acute process . Possible mild chronic interstitial abnormality .