Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are grossly clear . There is no focal consolidation or pneumothorax . There is no vascular congestion or pleural effusions . Cardiomediastinal and hilar contours are within normal limits . Metallic density in the midline subdiaphragmatic region is likely related to prior abdominal surgery .
    OUTPUT:
    
1 ) No acute cardiopulmonary process . 2 ) Unusual density in the region of the GE junction could be related to prior abdominal surgery . If there is no relevant history of surgery , the ddx could include an ingested foreign body .