Abstract

目的提高对血管内大B细胞淋巴瘤(IVLBCL)的认识。方法回顾性分析北京协和医院自2010年1月至2016年6月收治的12例IVLBCL患者的临床资料。结果①12例患者中,男6例,女6例,中位年龄为58.5(32~76)岁。临床表现:发热最为常见(10/12),其次为呼吸系统症状(咳嗽、呼吸困难、胸腔积液等,6/12)、噬血细胞综合征(6/12)、神经系统症状(1/12);所有患者均有LDH升高(367~1 700 U/L)、铁蛋白升高(805~1 527 µg/L)、结外器官受累(肺6例,骨髓3例,脑2例,软脑膜、肾上腺、副鼻窦、胆囊、甲状腺各1例)。②组织病理特征:光镜下可见分布于小血管内的单个或小簇状淋巴瘤细胞,毛细血管或血窦结构得以保留,免疫组化显示CD20、CD79a等B淋巴细胞标志阳性。③疗效及预后:11例患者接受CHOP或R-CHOP方案化疗,其总反应率为90.1%,完全缓解率为66.7%。患者平均随访20(1~40)个月,中位生存期及中位无进展生存期尚未达到。单因素Cox回归分析未能发现年龄、分期、IPI等临床参数与预后相关。结论IVLBCL临床罕见,出现肺部受累比例高,肺活检有较高阳性率;R-CHOP方案目前仍是最主要的治疗方案。

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