摘要目的 探讨影响儿童髓母细胞瘤(MB)患者预后的临床因素.方法 选择中山大学附属第一医院神经外科自2001年11月至2010年7月收治的儿童MB患者47例,采用Kaplan-Meier生存分析法和Cox回归模型分析患者年龄、性别、病程、肿瘤部位、术前转移、肿瘤切除程度、病理亚型、脑干侵袭程度、放疗与手术的时间间隔、化疗对生存时间即预后的影响.结果 本组患者2年生存率为91.4%,5年生存率为50%.Kaplan-Meier生存分析显示肿瘤全切或次全切者生存率高于大部分切除者,术前无转移患者生存率高于有转移者,放疗与手术的时间间隔≤42 d者生存率高于时间间隔>42 d者,差异均有统计学意义(P<0.05).Cox 回归模型分析显示术前转移、放疗与手术的时间间隔为儿童MB患者预后的影响因素,术前无转移、放疗与手术的时间间隔≤42 d患者预后较好.结论 术前有无转移和放疗与手术的时间间隔是影响儿童MB患者预后的独立因素.

abstractsObjective To analyze the correlation between the prognosis of pediatric medulloblastoma (MB) and its relevant clinical factors. Methods Forty-seven children with MB,admitted to our hospital from November 2001 to July 2010, were chosen;a retrospective analysis, using Kaplan-Meier survival tested by log-rank and Cox proportional hazards regression model, was performed to identify the correlation between the prognosis of pediatric MB and relevant clinical factors which included age, gender, course of disease, tumor location, pathological subtype, preoperative metastasis,extent of tumor resection, interval between surgery and radiation, brainstem invasion and chemotherapy.Results The 2-year survival rate of these patients was 91.4%, and 5-year survival rate 50%.Kaplan-Meier curves indicated that patients with total or subtotal tumor resection had a significantly higher survival rate than those with partial resection (P<0.05);patients without preoperative metastasis had a significantly higher survival rate than those with preoperative metastasis (P<0.05);and patients with interval between surgery and radiation≤42 d had a significantly higher survival rate than those with interval between surgery and radiation >42 d (P<0.05). Cox proportional hazards regression analysis indicated that preoperative metastasis (RR, 6.808;95%CI, 1.844 to 25.113;P<0.05) and interval between surgery and radiation (RR, 5.642;95% CI, 2.042 to 15.587;P<0.05) were the influencing factors for prognosis of MB. Patients without preoperative metastasis and with interval between surgery and radiation ≤42 d enjoyed good prognosis results. Conclusion Both preoperative metastasis and interval between surgery and radiation are independent factors for prognosis of pediatric MB.