Blood:在利妥昔单抗时代,结外DLBCL的临床特征和预后

2020-08-07 MedSci原创 MedSci原创

结外弥漫性大B细胞淋巴瘤(DLBCL)是最常见的淋巴瘤,多起源于淋巴结,但约40%的病例起源于结外,结外DLBCL的分子病理机制、临床表现及预后均不同于结内DLBCL。

结外弥漫性大B细胞淋巴瘤(DLBCL)是最常见的淋巴瘤,多起源于淋巴结,但约40%的病例起源于结外,结外DLBCL的分子病理机制、临床表现及预后均不同于结内DLBCL。近日,《Blood》杂志上发表了一项回顾性研究,对I期结外DLBCL在利妥昔单抗时代的特征和预后进行了归纳总结。

该研究纳入2001年-2015年采用利妥昔单抗、环磷酰胺、阿霉素、长春新碱、强的松(R-CHOP)或R-CHOP样方案联合或不联合放疗(RT)治疗的I期DLBCL患者。共筛选了1955位新确诊的DLBCL患者,其中341位为I期,符合要求被纳入分析。

在224位(66%)患者中观察到结外表现,117位(34%)患者有淋巴结肿大。最常见的结外病灶为骨骼(21%),其次是胃(19%)、睾丸(9%)、小肠(8%)和乳腺(8%)。

总体上,69%的结外和68%的结内表现患者都接受了RT治疗。

中位随访5.5年。10年总体存活率和无病存活率分别是均为77%。

在多变量分析中,相比淋巴结内受累,结外受累的患者的OS和无进展存活率均更差(HR分别是3.44和3.25)。在结外受累患者中,巩固RT可改善OS和PFS(HR分别是0.26和0.35);但在免疫化疗后PET阴性患者中未观察到此RT效益。

复发发生的通常较晚(中位时间37个月),最常见的复发部位是淋巴结(31%)和中枢神经系统(27%)。

总体上,I期结外DLBCL患者的预后比结内患者的差。免疫化疗结束后的PET检查结果可有助于决定结外患者是否需要进行巩固RT。

原始出处:

Sabela Bobillo,et al. Clinical Characteristics and Outcomes of Extranodal Stage I Diffuse Large B Cell Lymphoma in The Rituximab-Era. Blood. July 30, 2020.

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    2020-08-09 cathymary
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    2020-08-08 ms3000000449926787

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    2020-08-07 qinqiyun

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