出 处:《中华病理学杂志》2011年第4期220-226,共7页Chinese Journal of Pathology
基 金:卫生部行业基金部分资助(200802011);国家自然科学基金(30971113,30901690)
摘 要:目的了解原发胃肠道弥漫性大B细胞淋巴瘤的免疫分型,并比较Choi、Tally和Hans分型及其与预后的关系。方法复习90例原发胃肠道弥漫性大B细胞淋巴瘤患者的临床及病理资料并进行随访,应用Kaplan—Meier法、Log—rank检验和Cox比例风险回归模型对临床资料、实验室检测结果进行生存分析及单因素和多因素预后分析。免疫表型检测采用EnVision和EliVision法,选用的抗体有CD20、CD38、CD10、bcl-6、MUM-1、CD5、bcl-2、GCET1、FOXP1、LMO2、BLIMP1和Ki-67等。结果(1)年龄为27~83岁,中位年龄58岁,男女比为1.31:1;胃肿瘤58例,占64.4%(58/90);肠肿瘤32例,占35.6%(32/90)。(2)肿瘤细胞均表达CD20抗原,均不表达CD3ε和CD5;CDIO、bcl-6、MUM-1(30%/80%阈值)的表达率分别为17.8%(16/90)、75.6%(68/90)、52.2%(47/90)/43.3%(39/90),GCET1、FOXP1、LMO2的表达率分别为50.0%(45/90)、45.6%(41/90)、23.3%(21/90),bcl-2、BLIMP1的表达率分别为42.2%(38/90)、8.9%(8/90),Ki-67阳性指数20%-95%,中位数为80%。Hans分型:51.1%为生发中心B细胞型(GCB型),48.9%为非GCB型;Choi分型:55.6%为GCB型,44.4%为活化B细胞(ABC)型;Tally分型:34.4%为GCB型,65.6%为非GCB型。(3)67.8%(61/90)的患者接受化疗,68.9%(62/90)的患者接受手术。患者的2、3和5年总体生存率分别为58.5%、52.8%和49.8%,CHOP方案(环磷酰胺+多柔比星+长春新碱+泼尼松)治疗组的2、3和5年总体生存率分别为68.5%、61.2%和52.9%。结论Hans和Choi分型各亚型比例差别不大,Tally分型中非GCB型较GCB型比例增高。三种分型的各亚型均存在GCB型优于非GCB/ABC型的趋势。Log-rank检验单因素分析提示乳酸脱氢酶(LDH)水平、国际预后指数(IPI)、Objective To study the immunophenotype and prognostic significance of primary gastrointestinal diffuse large B-cell lymphoma, with reference to Hans, Choi and Tally algorithms. Methods The clinicopathologic features and follow-up data in 90 cases of primary gastrointestinal diffuse large B-cell lymphoma were analyzed by Kaplan-Meier method, Log-rank test and Cox regression model. Immunohistochemistry was carried out using EliVision and EnVision methods for CD20, CD3ε, CD10, bcl-6, MUM-l, CDS, bcl-2, GCET1, FOXP1, LMO2,BLIMP1 and Ki-67. Results The age of patients ranged from 27 to 83 years (mean = 58 years). The male-to-female ratio was 1.31: 1. Amongst the 90 cases studied, 64. 4% (58/90) involved the stomach and 35.6% (32/90) involved the intestine. The immunohistoehemical findings were as follows: 100% positivity for CD20, 0% for CD3ε and CD5, 17.8% (16/90) for CD10, 75.6%(68/90) for bcl-6, 52.2% (47/90) for MUM-1 (cut off was 30% ), 43.3% (39/90) for MUM-1 (cut off was 80%), 50.0% (45/90) for GCET1, 45.6% (41/90) for FOXP1, 23.3% (21/90) for LMO2, 42. 2% (38/90) for bcl-2 and 8.9% (8/90) for BLIMP1. The Ki-67 index ranged from 20% to 95% (median = 80% ). According to Hans algorithm, 51.1% of the cases belonged to germinal center B-cell (GCB) subtype and 48.9% belonged to non-GCB subtype. In contrast, Choi algorithm classified 55.6% cases as GCB subtype and 44. 4% as activated B-cell (ABC) subtype. According to Tally algorithm, 34.4% were of GCB subtype and 65.6% of non-GCB subtype. Most of the patients (67.8% ,61/90) received chemotherapy and 68.9% (62/90) underwent surgical resection. The overall 2, 3 and 5-year survival rates were 58.5% , 52.8% and 49. 8% , respectively. The overall 2, 3 and 5-year survival rates in the CHOP therapy group were 68.5%, 61.2% and 52. 9%, respectively. Conclusions There is no significant difference in ratio between the GCB and non-GCB/ABC subtypes by Hans and Choi algorithms. The non-GCB subtype s
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