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Abstract：
BACKGROUND: There is a lack of literature on the length of the terminal ileum to be resected in right hemicolectomy for colon cancer. Therefore, we aimed to determine the mean ileal loop length and the effect of this variation on postoperative complications and long-term oncological outcomes in patients who underwent right hemicolectomy.
METHODS: Right hemicolectomy surgeries performed for colon cancer in a tertiary care hospital between January 2011 and December 2018 were retrospectively analyzed from a prospective database. Two patient groups were established based on the mean length of the resected ileum above and below 7 cm. The two groups were compared for clinicopathological data, postoperative complications, mortality, long-term overall survival (OS) and disease-free survival (DFS). The factors contributing to OS and DFS were analyzed.
RESULTS: The study included 217 patients. Body mass index (BMI) values were significantly higher in the ileum resection length > 7 cm group (p = 0.009). Pathological N stage, tumor diameter, and number of metastatic lymph nodes were significantly higher in the ileum resection length > 7 cm group (p = 0.001, p = 0.001, and p = 0.026, respectively). There was no significant difference for postoperative complication and mortality rates between the two groups. The mean follow-up period was 61.2 months (2-120) in all patients. The total number of deaths was 29 (11.7%) while the 60-month OS was 83.5% and 50-month DFS was 81.8%. There was no significant difference between the groups in terms of OS and DFS rates (p > 0.05).
CONCLUSIONS: Excessive resection of the distal ileum in right hemicolectomy does not provide any benefit in terms of prognosis and complications.The ileum resection length and values close to it in our study appear to be sufficient.
METHODS: Right hemicolectomy surgeries performed for colon cancer in a tertiary care hospital between January 2011 and December 2018 were retrospectively analyzed from a prospective database. Two patient groups were established based on the mean length of the resected ileum above and below 7 cm. The two groups were compared for clinicopathological data, postoperative complications, mortality, long-term overall survival (OS) and disease-free survival (DFS). The factors contributing to OS and DFS were analyzed.
RESULTS: The study included 217 patients. Body mass index (BMI) values were significantly higher in the ileum resection length > 7 cm group (p = 0.009). Pathological N stage, tumor diameter, and number of metastatic lymph nodes were significantly higher in the ileum resection length > 7 cm group (p = 0.001, p = 0.001, and p = 0.026, respectively). There was no significant difference for postoperative complication and mortality rates between the two groups. The mean follow-up period was 61.2 months (2-120) in all patients. The total number of deaths was 29 (11.7%) while the 60-month OS was 83.5% and 50-month DFS was 81.8%. There was no significant difference between the groups in terms of OS and DFS rates (p > 0.05).
CONCLUSIONS: Excessive resection of the distal ileum in right hemicolectomy does not provide any benefit in terms of prognosis and complications.The ileum resection length and values close to it in our study appear to be sufficient.
摘要：
背景：缺乏关于右半结肠切除术中切除回肠末端长度的文献。因此,我们旨在确定接受右半结肠切除术的患者的平均回肠环长度以及这种变化对术后并发症和长期肿瘤结局的影响.
方法：从前瞻性数据库中对2011年1月至2018年12月在三级医院进行的结肠癌右半结肠切除术进行回顾性分析。根据切除的回肠在7cm以上和以下的平均长度建立了两个患者组。比较两组临床病理资料,术后并发症,死亡率,长期总生存期（OS）和无病生存期（DFS）。分析了影响OS和DFS的因素。
结果：该研究包括217名患者。体重指数（BMI）值在回肠切除长度>7cm组中明显更高（p=0.009）。病理N期,肿瘤直径,回肠切除长度>7cm组的转移性淋巴结数量显着增加（分别为p=0.001，p=0.001和p=0.026）。两组术后并发症和死亡率差异无统计学意义。所有患者平均随访时间为61.2个月（2-120）。死亡总数为29例（11.7%），60个月OS为83.5%，50个月DFS为81.8%。两组间OS和DFS率无显著差异(p>0.05)。
结论：右半结肠切除术中回肠远端过度切除对预后和并发症没有任何益处。在我们的研究中，回肠切除长度和接近它的值似乎就足够了。
方法：从前瞻性数据库中对2011年1月至2018年12月在三级医院进行的结肠癌右半结肠切除术进行回顾性分析。根据切除的回肠在7cm以上和以下的平均长度建立了两个患者组。比较两组临床病理资料,术后并发症,死亡率,长期总生存期（OS）和无病生存期（DFS）。分析了影响OS和DFS的因素。
结果：该研究包括217名患者。体重指数（BMI）值在回肠切除长度>7cm组中明显更高（p=0.009）。病理N期,肿瘤直径,回肠切除长度>7cm组的转移性淋巴结数量显着增加（分别为p=0.001，p=0.001和p=0.026）。两组术后并发症和死亡率差异无统计学意义。所有患者平均随访时间为61.2个月（2-120）。死亡总数为29例（11.7%），60个月OS为83.5%，50个月DFS为81.8%。两组间OS和DFS率无显著差异(p>0.05)。
结论：右半结肠切除术中回肠远端过度切除对预后和并发症没有任何益处。在我们的研究中，回肠切除长度和接近它的值似乎就足够了。
