原发纵隔B细胞淋巴瘤疗效分析

目的 分析原发纵隔B细胞淋巴瘤的治疗疗效和失败原因.方法 搜集14年间收治的病理让实的原发纵隔B细胞淋巴瘤46例,其中Ⅰ期14例,Ⅱ期23例,Ⅲ期3例,ⅣA期6例.21例接受手术治疗,其中开胸探查术19例,纵隔镜活检术2例.37例Ⅰ+Ⅱ期中,8例接受单纯化疗,29例接受化疗+放疗,Ⅲ+Ⅳ期以化疗为主.放疗多采用纵隔加颈部照射野,中位剂量为45.00 Gy(16.95～61.00 Gy).化疗采用CHOP方案27例,三代化疗方案(MACOP-B,ProMACE/CytaBOM,m-BACOD,PmMACE-MOPP)9例,高剂量化疗加自体外周血干细胞移植(HDCT/APBSCT)10例.化疗+美罗华16例.化疗周期多为6～8个.结果 全组患者首程治疗后达完全缓解19例,部分缓解14例,病变进展11例,未评价2例.全组11例死于肿瘤.全组5年总生存率为35%.Ⅰ+Ⅱ期和Ⅲ+Ⅳ期2年总生存率分别为79%和51%,5年总生存率分别为63%和0(X2=4.35,P=0.037),2年无进展生存率分别为63%、11%(x2=17.77,P=0.000).治疗后达完全缓解者5年总生存率为80%,部分缓解者为50%,病变进展者为0(X2=19.58,P=0.003).19例治疗中病变进展或治疗后复发,腹腔淋巴结受侵和远处结外器官受侵最常见.结论 晚期患者生存率低,需要探讨更为有效的全身治疗方案,放疗可改善局部控制率.

The outcome of primary mediastinal large B-cell lymphoma

Objective To investigate the treatment outcome and failure in patients with primary mediastinal large B-cell lymphoma(PMBL). Methods Between Jan. 1992 and Oct. 2006, a total of 46 patients with pathologically confirmed PMBL were reviewed, including 14 with Ann Arbor Stage I disease, 23 with Stage Ⅱ disease,3 with Stage Ⅲ disease and 6 with Stage Ⅳ disease. Stage Ⅰ+Ⅱ disease was present in 80% of the patients. All patients were treated with chemotherapy ,and 29 also received radiotherapy. Twenty-seven patients(59%) were treated with first generation regimen(CHOP),9(20%) with third generation regimens (MACOP-B, ProMACE/CytaBOM, m-BACOD, or ProMACE-MOPP), and 10(22%) with high-dose chemotherapy (HDCT/APBSCT). Rituximab was administered to 16 patients (35%). For most patients who received radiotherapy,an involved field was used with a median dose of 45 Gy in 23 fractions.Results The rate of complete remission, partial remission and progression disease was 41%, 30% and 24% ,respectively. The 5-year overall survival rate(OS) for all patients was 35%. The 2- and 5-year OS was 79% and 63% for stage Ⅰ+Ⅱ and 51% and 0 for stage Ⅲ+Ⅳ ,respectively(X2=4.35 ,P=0. 037).The 2-year progression free survival rate was 63 % and 11%, respectively (X2=17.77, P=0.1300). The 5-year OS was 80% for the patients with CR,50% for those with PR,and 0 for those with progression disease(X2= 19.58 ,P=0.003 ). With a median follow-up of 22 months, progression disease and relapse occurred in 19 patients. Conclusions Survival of patients with advanced stage PMBL is poor. Further studies areneeded to confirm the optimal treatment. Radiotherapy often plays a pivotal role in local control.