Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiomediastinal silhouette is unremarkable . Patient is post median sternotomy , with mediastinal surgical clips and intact median sternotomy wires . No focal consolidation , pleural effusion , or pneumothorax . Cervical fusion hardware is noted in the neck .
    OUTPUT:
    
No acute intrathoracic process .