卵巢上皮性癌的腹膜后淋巴结切除对预后的影响

Effect of retroperitoneal lymphadenectomy on survival of patients with epithelial ovarian cancer

目的 探讨卵巢上皮性癌患者腹膜后淋巴结切除对预后的影响。方法 回顾性分析13 1例卵巢上皮性癌患者的临床资料 ,应用COX风险比例回归模型判断影响预后的因素。结果 多因素分析显示 ,年龄、临床分期、残留灶、腹膜后淋巴结切除术及术后化学药物治疗 (化疗 ) ,是影响预后的重要因素。行和未行腹膜后淋巴结切除术患者的 5年生存率分别为 66%和 41% (P <0 0 1)。对于早期和Ⅲ、Ⅳ期肿瘤残留灶直径 >2cm或黏液性癌患者 ,腹膜后淋巴结切除术并不能提高生存率。Ⅲ、Ⅳ期肿瘤残留灶直径≤ 2cm ,行与未行腹膜后淋巴结切除术患者的 5年生存率分别为 65 %、3 0 %(P <0 0 1)。卵巢浆液性癌 ,行与未行腹膜后淋巴结切除术患者的 5年生存率分别为 61%、3 1% (P<0 0 1)。结论 年龄、临床分期、残留灶大小、腹膜后淋巴结切除与否及术后化疗的疗程数 ,与卵巢上皮性癌患者的预后有关。腹膜后淋巴结切除术虽能提高患者生存率 ,但对肿瘤残留灶直径 >2cm的Ⅲ、Ⅳ期卵巢上皮性癌患者 。

Objective The purpose of this study was to determine prognostic factors that have an impact on overall survival and to assess the rational application of retroperitoneal lymphadenectomy in patients with epithelial ovarian cancer. Methods A retrospective review was performed of 131 patients treated between Jan.1990 and Dec.1998 in Union Hospital and Tongji Hospital. Survival was calculated by Kaplan-Meier method and comparison was performed using Log-rank test. Independent prognostic factors were identified by the COX proportional hazards regression model. Results Multivariate analysis showed that the age, stage, residual tumor, retroperitoneal lymphadenectomy and the number of courses of chemotherapy were the most important prognostic factors. The overall 5-year survival was 66% and 41% for patients who did and did not undergo lymphadenectomy, respectively (P<0.01). But the survival rate could not be improved through retroperitoneal lymphadenectomy in the patients with early stage, advanced stage whose residual tumor >2 cm and those with mucinous adenocarcinoma(P>0.05).Among patients with advanced stage whose residual tumor ≤2 cm, 5-year survival was 65% and 30% for patients who did and did not undergo lymphadenectomy , respectively(P<0.01).Among patients with serous adenocarcinoma, 5-year survival was 61% and 31% for patients who did and did not undergo lymphadenectomy, respectively(P<0.01). Conclusions The prognosis of the patients with epithelial ovarian cancer may be influenced by age, stage, residual tumor, retroperitoneal lymphadenectomy and the number of courses of chemotherapy. Although retroperitoneal lymphadenectomy could improve the survival rate, it should be carried out selectively.