| 
      Abbreviations: SMV- Superior Mesenteric Vein; SMA- Superior Mesenteric Artery
        | Characteristic | Number | % |  
        | Age at diagnosis, yr |  |  |  
        | Median(range) | 69.1(59~78) |  |  
        | Sex |  |  |  
        | Male | 9 | 81.8 |  
        | Female | 2 | 18.2 |  
        | ECOG Performance    status |  |  |  
        | 0 | 10 | 90.9 |  
        | 1 | 1 | 9.1 |  
        | Site of tumor |  |  |  
        | Head | 10 | 90.9 |  
        | Tail | 1 | 9.1 |  
        | Resectability |  |  |  
        | Resectable | 6 | 54.5 |  
        | Borderline resectable |  |  |  
        | SMV encased (short segment) | 3 | 27.3 |  
        | SMA abutment | 1 | 9.1 |  
        | SMA abutment and SMV encased | 1 | 9.1 |  |