Primary central nervous system lymphoma with clonal bone marrow B cells:16 cases and literature review
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维普
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目的 总结原发性中枢神经系统淋巴瘤(primary central nervous system lymphoma,PCNSL)伴骨髓克隆性B细胞患者的临床特征、诊疗经过及预后,探究其对临床诊治产生的影响.方法 纳入2020年1月至2023年7月复旦大学附属华山医院经骨髓流式判定骨髓存在克隆性B细胞的PCNSL患者.收集这些患者的辅助检查资料,包括血常规、生化常规、骨髓穿刺及活检、头颅MR增强、全身PET-CT等检查结果,随访患者生存情况,采用Kaplan-Meier绘制生存曲线,并复习相关文献.结果 共纳入223名初诊PCNSL患者,有187例完成骨髓穿刺及活检评估,通过流式细胞术发现有16例(8.56%)患者骨髓存在克隆性B细胞;2例骨髓活检示B淋巴瘤累及骨髓;所有患者均接受大剂量甲氨蝶呤为基础的化疗方案.16位骨髓存在克隆性B细胞的患者组的中位无进展生存期(progression free survival,PFS)为11.1个月;171位骨髓正常患者组的中位PFS为12.6个月.两组中位PFS差异无统计学意义.结论 PCNSL伴骨髓克隆性B细胞患者临床特征无特异性,骨髓流式细胞术显示克隆性B细胞.大剂量甲氨蝶呤治疗方案对其有效.骨髓克隆性B细胞的存在对于PCNSL患者PFS无影响.PCNSL患者骨髓中克隆性B细胞的出现可能由于单克隆B淋巴细胞增多症、淋巴瘤累及骨髓及存在共同前体细胞等.疑诊PCNSL患者的初始评估中应进行骨髓检查.
Objective To summarize the clinical features,treatment and prognosis of patients with primary central nervous system lymphoma(PCNSL)with clonal bone marrow B cells,and to explore the influence on clinical diagnosis and treatment.Methods PCNSL patients with clonal bone marrow B cells diagnosed by flow cytometry between Jan 2020 and Jul 2023 at Huashan Hospital of Fudan University were enrolled.The auxiliary examination data of these patients were collected,including complete blood count,routine biochemistry,bone marrow aspiration and biopsy,contrast-enhanced brain MRI,and whole-body PET-CT.Kaplan-Meier was used to draw the survival curve,and relevant literature was reviewed.Results A total of 223 newly diagnosed PCNSL patients were included,187 of whom completed bone marrow puncture and biopsy evaluation.We found clonal bone marrow B cells in 16 of 187 cases(8.56%)by flow cytometry.2 patients showed B lymphoma involving the bone marrow.All patients received a high-dose methotrexate based chemotherapy.The median progression free survival(PFS)of 16 patients with clonal bone marrow B cells was 11.1 months,and the median PFS of 171 patients with normal bone marrow was 12.6 months.There was no significant difference in the PFS between the two groups.Conclusion PCNSL with clonal bone marrow B cells had no specific clinical features,but bone marrow flow cytometry showed clonal B cells.High-dose methotrexate treatment regimen is effective.There was no significant difference in PFS for PCNSL patients with clonal B cells and normal findings in bone marrow.Clonal B cells in bone marrow may be caused by monoclonal B-cell lymphocytosis(MBL),lymphoma involves the bone marrow and the presence of common precursor cells.Bone marrow examination should be performed in the initial evaluation of suspected PCNSL.
primary central nervous system lymphoma(PCNSL)clonal bone marrow B cellscommon precursor cellsprognosis
维普
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