摘要目的 探讨局部切除术用于低位直肠癌的可行性及预后影响因素.方法 回顾性分析1975年1月至2006年12月实施局部切除术且资料完整的124例低位直肠癌患者的临床资料,采用Kaplan-Meier法进行生存分析,Log-rank检验进行统计学比较.COX比例风险模型进行多因素分析.结果 124例患者的5年生存率为90.7%(97/107),并发症发生率为4.8%(6/124),局部复发率为15.3%(19/124).单因素分析显示,肿瘤浸润深度、脉管瘤栓、肿瘤大小和分化程度与患者术后生存率有关;而性别、年龄、肿瘤位置、大体类型与术后生存率无关.多因素分析显示,肿瘤浸润深度是影响预后的独立危险因素.结论 Tis及T1期低位直肠癌适合采用局部切除术,部分具有高危局部复发因素的T1期低位直肠癌应选择根治术,局部切除术后患者应接受严密随访和必要的辅助治疗.

abstractsObjective To investigate the prognosis of local resection in patients with low rectal cancer, and assess surgical indications for this procedure. Methods One hundred and twenty-four patients with low rectal cancer from Jan 1975 to Dec 2006 were analyzed, the clinicopathologic features and surgical, outcome were examined as prognostic factors. Survival rate was estimated by Kaplan-Meier method and compared by Log-Rank test, prognostic factors were analyzed by multivariate COX proportional hazards model. Results The 5-year survival rate of 124 patients underwent local resection was 90.7 %(97/107), there were 4.8 %(6/124) patients with complications and 15.3 %(19/24) ones with local recurrence.The infiltration, vascular invasion, the size of tumor and the histological grade were significant prognostic factors of overall survival, but gender, age, the tumor site and the macroscopic type were not. Multivariate analysis indicated that the tumor infiltration were independent poor prognostic factor. Conclusion Local resection is suitable for Tis and T1 low rectal cancer, and those with high local recurrence factors should undergo radical resection. Strict follow-up and adjuvant therapy is necessary for local excision.