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此项回顾研究的对象是经过外科治疗的７９例肝门部胆管癌患者，平均年龄５９．５岁（２１～７３）。其中１２例患者术后生存５年以上，因此根据其长期存活的特点被确定为分析对象。１５例患者由于死于术后并发症而被排除这个长期存活的分析。术前据Ｂｉｓｍｕｔｈ法分类：Ⅰ级
The subject of this retrospective study was surgical treatment of 79 patients with hilar cholangiocarcinoma, with an average age of 59.5 years (21-73). Of these, 12 patients survived after surgery for more than 5 years and were therefore identified as the analysis subject based on their long-term survival characteristics. Fifteen patients were excluded from this long-term survival analysis because of postoperative complications. Preoperative classification according to Bismuth law: Level I