Abstract

目的探讨增加维持治疗强度对Ⅲ期和Ⅳ期儿童青少年淋巴母细胞淋巴瘤(Lymphoblastic lymphoma, LBL)患者预后的影响。方法回顾性分析接受BFM-NHL-90/-95方案治疗且未做纵隔和中枢预防性放疗的Ⅲ期和Ⅳ期儿童青少年LBL患者的治疗结果。研究分组:1998年至2005年收治的患者于维持治疗阶段,在口服巯基嘌呤和甲氨蝶呤的基础上,定期采用“足叶乙甙+阿糖胞苷”和大剂量甲氨蝶呤交替进行化疗,为强化维持治疗组;其余为非强化维持治疗组。结果187例LBL患者纳入研究,其中强化维持治疗组52例,非强化维持治疗组135例,两组患者的性别、年龄、免疫分型、临床分期、危险度分层、受累部位的差异均无统计学意义(P值均>0.05);中位随访48(0.5~221)个月,两组患者的5年无事件生存(EFS)率分别为(76.9±5.8)%和(77.9±4.3)%(χ2=0.249,P=0.617),5年总生存(OS)率分别为(78.8±5.7)%和(79.8±4.1)%(χ2=0.353,P=0.552),差异均无统计学意义;亚组分析结果显示,两组患者在不同临床分期(Ⅲ/Ⅳ期)、免疫分型(T/B-LBL)和危险分层(中/高危)中的EFS、OS率差异均无统计学意义(P值均>0.05)。维持治疗期间,强化维持治疗组和非强化维持治疗组患者Ⅲ、Ⅳ级骨髓抑制发生率分别为55.8%和18.5%(χ2=25.363,P<0.05)。结论提高维持治疗强度并未提高Ⅲ期和Ⅳ期儿童青少年LBL患者的长期生存且可增加骨髓抑制等治疗相关不良反应。

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