Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are clear without focal consolidation , effusion , or pulmonary edema . Cardiac silhouette is within normal limits . Prominence of the upper mediastinum is confirmed as prominent mediastinal fat as demonstrated on prior MRI . Lower cervical anterior fixation hardware is partially visualized .
    OUTPUT:
    
No acute cardiopulmonary process .