立体定向适形放射治疗肺癌的临床研究

42例肺癌患者接受立体定向放疗4～8Gy/次，1次/d，总量30～45Gy,结果治疗后，CR为14.3%(6/42),CR PR76．2％(32/42),NC16．7％(7/42)。主要不良反应为放射性食管炎及放射性肺炎．反应程度较轻。初步研究结果提示．立体定向适形放疗治疗肺癌近期疗效令人满意。     

后程立体定向适形加速放射治疗非小细胞肺癌近期疗效分析

目的　观察后程立体定向适形加速放射治疗非小细胞肺癌的近期疗效和急性放射反应。方法　 13 7例非小细胞肺癌患者进入本研究 ,放射治疗分为常规放射治疗和后程立体定向适形加速推量治疗 2个阶段进行 ,常规放射治疗 40Gy后 ,改用后程立体定向适形加速推量照射 ,3～ 4Gy/次 ,1次 /d ,5次 /周 ,共治疗 7～ 10次 ,总剂量至 68～ 70Gy。结果　 13 7例中 ,13 2例按计划完成治疗 ,近期疗效为完全缓解 16 7% ( 2 2 / 13 2 ) ,部分缓解 68 9% ( 91/ 13 2 ) ,总有效率 85 6% (CR PR) ;放射性食管炎的发生率为 71 9% ( 95 /13 2 ) ,放射性肺炎发生率为 2 2 0 %。结论　后程立体定向适形加速放射治疗非小细胞肺癌 ,近期疗效肯定 ,急性副反应绝大多数患者可以耐受 ,远期疗效和晚期并发症有待进一步的观察。     

后程立体定向放射治疗放疗后局部复发鼻咽癌--附42例临床分析

探讨立体定向放射治疗在鼻咽癌放疗后复发再程放疗中的价值。常规外照射组 2 0例 ,全程外照射 ,DT5 5～ 60Gy/5～ 6周。立体定向放射治疗后程加量组 2 2例 ,先常规外照射 ,DT3 0～ 40Gy/3～ 4周 ,后程立体定向放射治疗加量 ,DT3 5～ 4Gy/次 ,隔日 1次 ,共 4～ 6次。治疗后 3～ 6个月CT或MRI复查 :常规外照射组局部控制率为65 % ( 13 /2 0 ) ,后程加量组为 86 4% ( 19/2 2 ) ;新增张口受限及新增颞叶损伤常规组分别为 75 % ( 12 /16)、75 %( 9/12 ) ,后程加量组分别为 3 7 5 % ( 6/16)、3 0 8% ( 4 /13 )。初步研究结果提示 ,立体定向放射治疗对鼻咽癌放疗后复发再程放疗较常规外照射的局部控制率高 ,放射损伤小 ,患者生存质量高     

立体定向放射治疗局部晚期肺癌48例疗效分析

目的:评价X-刀立体放疗在局部晚期肺癌治疗中的价值.方法:对48例患者采用高剂量分割治疗,每周3次,分5～8次进行,处方剂量6Gy～8Cy,总量40Gy～48Gy.结果:完全缓解(CR)20例,部分缓解(PR)22例,无变化(NC)4例,总有效率87.5%,控制率为95.8%.结论:立体定向放射治疗局部晚期肺癌有肯定的近期疗效.     

立体定向放疗治疗15例肺部小肿瘤患者的疗效分析

背景与目的立体定向放疗在临床应用中取得了令人振奋的成果。本研究旨在评价直线加速器大分割立体定向放疗治疗肺部小肿瘤的可行性。方法纳入2005年9月-2009年8月本院收治的15例符合要求的非小细胞肺癌(non-small cell lung cancer,NSCLC)及肺部转移瘤患者。放疗前在模拟机下测定肺部病灶的左右、前后、头尾三个方向的呼吸运动幅度,采用CT模拟定位,选择三维适形立体定向放疗。放疗剂量如下:5Gy×10次/12天生物有效剂量[(biological e ective dose,BED)=75Gy]2例,6Gy×8次/10天(BED=76.8Gy)3例,8Gy×6次/8天(BED=86.4Gy)2例,12Gy×4次/4天(BED=132Gy)8例,病变直径1.5cm-4cm,毒性评价标准按照NCI-CTCAE3.0版本进行。结果 15例患者患者近期疗效完全缓解(complete response,CR)率为60%,部分缓解(partial response,PR)率为20%,总有效率(CR+PR)为80%。1年局部控制率为100%,1年生存率为86.67%。肺的早期放射性反应0级2例,I级9例,II级4例,无III级以上的副反应。结论利用直线加速器对肺部小病灶实施48Gy/4次/4天的照射是可行的。     

后程立体定向放射治疗腹膜后淋巴结转移癌的疗效观察

目的　探讨后程立体定向放射治疗腹膜后淋巴结转移癌的疗效。方法　选择 2 9例消化道恶性肿瘤所致腹膜后淋巴结转移癌病人 ,包括食管中、下段鳞癌放疗后转移的 13例 ,胃腺癌术后转移的 6例 ,胃未分化癌术后转移的 4例 ,结肠低分化腺癌术后转移的 6例。先给予常规外照射DT 3 5～ 5 0Gy ,4～ 5周 ,休息 7天后行后程立体定向放射治疗补量治疗 ,分次治疗方法为DT 5～ 8Gy/次 ,隔日 1次 ,4～ 8次为 1个疗程 ,平均补量为DT 3 5Gy( 2 5～ 45Gy)。结果　治疗后 3～ 6个月 ,CT及MRI复查示 :CR 3 4 5 %、PR5 1 7%,总有效率为 86 2 %。所有病例KPS评分均提高 ,未出现明显放疗并发症。结论　后程立体定向放射治疗补量治疗消化道肿瘤所致腹膜后淋巴结转移癌疗效肯定 ,可作为临床上首选的—种治疗方法     

立体定向放射治疗局部晚期肺癌48例疗效分析

目的：评价X-刀立体放疗在局部晚期肺癌治疗中的价值。方法：对48例患者采用高剂量分割治疗，每周3次，分5～8次进行，处方剂量6Gy～8Gy，总量40Gy～48Gy。结果：完全缓解(CR)20例，部分缓解(PR)22例，无变化(NC)4例，总有效率87．5％，控制率为95．8％。结论：立体定向放射治疗局部晚期肺癌有肯定的近期疗效。     

立体适形放疗合并化疗治疗中晚期非小细胞肺癌

目的:探讨立体定向适形放疗合并药物联合化疗治疗中晚期非小细胞肺癌(NSCLC)疗效。方法:38例ⅢA/ⅢB,Ⅳ期NSCLC实施立体定向适形放疗每次5~10Gy,每周2~3次,8~10次/疗程,肿瘤灶总生物有效量为70~80Gy;同时进行药物联合化疗长春瑞滨25mg/m2,静滴第1、8天,顺铂80mg/m2,静滴第1天,每21天1周期,共4周期。结果:立体定向适形放疗合并药物联合化疗有效率为92%,其中CR为16例,PR为19例,1年生存率为75%,2年生存率为37%。中位生存时间16个月。结论:立体定向适形放疗合并化疗可明显提高中晚期非小细胞肺癌的控制率和生存率,是安全有效的治疗手段,其量效关系尚需进一步临床观察和随访。     

立体定向放射治疗肺癌脑转移疗效分析

目的探讨不同放射治疗方法对肺癌脑转移的疗效.方法176例由病理学证实的肺癌脑转移患者分为4组:单纯全脑放疗(WBRT)组、全脑放疗加立体定向放射外科(WBRT SRS)组、单纯立体定向放射治疗(SRT)组、全脑放疗加立体定向放射治疗(WBRT SRT)组.SRS治疗单次靶区平均周边剂量8～20Gy,总剂量20～32Gy;SRT治疗单次靶区平均周边剂量2～5Gy,总剂量25～60Gy;WBRT1.8～2Gy/次,总剂量30～40Gy.结果四组的局部控制率分别为47.0%、87.7%、86.5%和78.0%;中位生存期分别为5.0,11.0,11.5和10.0个月;局部无进展生存期分别为3.33,8.33,9.33和7.67个月;颅脑无新病灶生存期分别为4.11,8.57,9.03和6.12个月.在死因分析中,WBRT组死于脑转移的比率为57.6%,较其他三组高.而WBRT SRS组的晚期放射反应的发生率为12.2%,较其他组高.结论肺癌单发脑转移瘤患者的最佳治疗方式是单纯立体定向放射治疗,治疗失败后再行挽救性全脑照射或立体定向放疗.对于多发脑转移,全脑放疗加立体定向放射治疗(WBRT SRT)在提高生存率以及减少并发症方面优于其他治疗方法.     

X刀立体定向放射治疗非小细胞肺癌的临床研究

目的观察X刀立体定向放射治疗非小细胞肺癌(NSCLC)的近期、远期疗效及其并发症,探讨X刀立体定向放疗在非小细胞肺癌治疗中的应用价值。方法75例符合条件的NSCLC患者随机分为两组,X刀治疗组38例,应用X刀立体定向放疗,剂量4~6Gy/次,每日或隔日1次,共治疗8~10次,使GTV边缘剂量达45~55Gy。常规放疗组37例,常规分割放疗,每次1.8~2.0Gy,每日1次,每周5次,总照射剂量60~65Gy。结果X刀组总有效率(CR PR)为86.8%,明显优于常规放疗组的62.1%,两组差异有非常显著性(P<0.05)。X刀组1,2,3年生存率分别为87.5%、60.0%和35.0%;常规放疗组分别为58.3%、27.8%和16.7%,两组间1,2,3年生存率比较差异均有显著性。结论与常规放疗相比,X刀立体定向放疗可以在较好保护周围正常组织的同时,提高肿瘤照射区的放射剂量,从而增加非小细胞肺癌的局部控制率,提高远期生存率。     

PET方案化疗联合胸部放疗治疗局限期小细胞肺癌的疗效观察

回顾性分析PET(Paclitaxel135mg/m2,d1,Vp-1675mg/m2d1~d3,DDP80mg/m2,d1~d3使用)方案化疗联合胸部放疗治疗局限期小细胞肺癌的临床疗效。24例局限期小细胞肺癌接受PET化疗,每3周重复1次,共4~6个周期,胸部放疗于化疗2个周期后开始进行,2Gy/(5次·周),DT50~60Gy/25~30次,治疗达完全缓解者予以全脑预防性放疗DT30Gy/(15次·3周)。结果显示,24例局限期小细胞肺癌患者完全缓解(CR)19例,部分缓解(PR)4例,总缓解率95·8%(CR79·2%,PR16·7%),中位生存期25个月,2、3年生存率分别为50·0%和41·7%,局部复发率29·2%,远处转移率54·2%。PET方案化疗联合胸部放疗治疗局限期小细胞肺癌有较好的缓解率和近期疗效,毒性反应可耐受。     

Results of 2 multicenter therapy studies in inoperable non-small cell bronchial cancer

A total of 166 patients with non-small cell lung cancer (NSCLC) were included in two multicenter trials testing different treatment regimens. In study I, 116 patients received 4 cycles of aggressive polychemotherapy consisting of cis-platinum 100 mg/m2 (day 1), etoposide 100 mg/m2 (days 4-6), and vindesine 3 mg/m2 (day 1) (CEV); patients without distant metastases subsequently received chest irradiation with 50 Gy. In study II, 50 patients were treated with monochemotherapy consisting of etoposide 250 mg/m2 (days 1-3), and ifosfamide 5 g/m2 as 24-h infusion (day 29). While this program was repeated in responders with extensive disease (ED), patients with limited disease (LD) subsequently received chest irradiation with 50 Gy using 20 mg/m2 cis-platinum weekly as a radiosensitizer. Response rates (CR + PR) to chemotherapy were higher in study I than in study II, and were 26% (CR 3%) vs. 8% (CR 0%) for all patients, 18% (CR 0%) vs. 4% (CR 0%) for ED, and 45% (CR 11%) vs. 13% (CR 0%) for LD. The increase in response rates by radiotherapy was marginal in study I (CR + PR 47%, CR 18%), but remarkable in study II (CR + PR 42%, CR 29%). While median survival was slightly longer in study I than in study II for ED (7.7 vs. 6.6 months) and LD (14.4 vs. 12.0 months), the 2-year survival rate was in favor of study II (10% vs. 25%). Toxicity was clearly more pronounced in study I, including 3 lethal complications and 16 discontinuations of therapy due to side effects or refusal. Thus, while in ED the efficacy of both treatment regimens was very restricted, in LD radiotherapy with cis-platinum as a radiosensitizer achieved a relatively high 2-year survival rate which justifies further testing of this treatment strategy.     

非小细胞肺癌后程大剂量分割三维适形放射治疗

目的对非小细胞肺癌行大剂量分割三维适形放射治疗,探索此分割方法治疗非小细胞肺癌的近期疗效和急性放射反应.方法 2001年6月～2003年12月,11例非小细胞肺癌患者进入本研究,可以评价病例共9例.常规放射治疗40 Gy后对原发灶行大剂量分割三维适形放射治疗,3 Gy/次,1次/日,5次/周,7～10次.治疗1个月后评价肿瘤消退情况和放射性副反应.结果 9例患者顺利完成治疗.原发灶完全缓解率(CR)占33%(3/9),部分缓解率56%(5/9),无变化(1/9),总有效率为89%(8/9).急性放射性食道炎发生率Ⅰ、Ⅱ级22%(2/9),Ⅲ级11%(1/9).急性放射性肺炎发生率0级22%(2/9),Ⅰ、Ⅱ级44%(4/9),Ⅲ、Ⅳ级33%(3/9).急性骨髓抑制均在Ⅰ级以下.2例分别于治疗结束2.5个月和5个月死于放射性肺炎.单次剂量超过2 Gy的同侧受照肺体积≥400 cc时,急性放射性肺炎明显加重.结论利用三维适形技术对非小细胞肺癌行后程大剂量分割照射,抑制肿瘤干细胞的加速再增殖是可行的,有较好的近期疗效.单次剂量大于200 cgy的同侧受照肺体积是很好的预测放射性肺炎的指标.远期疗效和晚期并发症还有待进一步的观察.     

分次立体定向放射治疗肺癌的临床研究

目的 观察分次立体定向放射治疗肺癌的近期疗效。方法 48例中晚期肺癌实施立体定向放疗,5～8 Gy/次,隔日1次,肿瘤灶总剂量48～58 Gy,42例有肿大淋巴结者给予常规放疗。结果 治疗3个月后复查CT,肿块完全消失18例,缩小1/2以上者27例,不足1/2者3例,42例肿大淋巴结完全恢复正常,完全缓解18例,占37.5％,部分缓解30例,占62.5％,有效率100％。结论 分次立体定向放射治疗中晚期肺癌有较好的近期疗效,远期疗效及晚期并发症有待进一步随访证实。     

A randomized study evaluating radiotherapy versus chemotherapy in patients with inoperable non-small cell lung cancer

A combination of cisplatin (70 mg/m2 i.v. day one) and etoposide (100 mg/m2 i.v. day one, 200 mg/m2 orally days 2 and 3) repeated every third week to a maximum of 4 cycles were compared with high voltage radiotherapy, 42 Gy given in 15 fractions over a 3-week period to patients with inoperable non-small cell lung cancer (a shield was used in the posterior field to reduce the total spinal dose less than 40 Gy). One hundred and eighteen patients received radiotherapy; the median survival was 10.6 months compared to 10.5 months for the 116 chemotherapy patients (p = 0.81). The objective response rate (CR + PR) was 42% for the radiotherapy and 21% for the chemotherapy group (p = 0.009). At progression it was optional to cross over to the other treatment modality or to receive phase II chemotherapy. Thirty patients primarily treated with radiotherapy and 54 allocated to chemotherapy received second line antineoplastic treatment.     

结直肠癌术后放疗后局部复发或转移的三维适形放疗

目的:评价三维适形放疗对术后放疗后局部复发或转移的结直肠癌患者的局部控制率、生存率以及治疗的安全性。方法:26例术后放疗后局部复发或转移的结直肠癌患者采用三维适形放疗,3Gy~4.5Gy/次/日,每周5次,总剂量DT42Gy~48Gy。结果:完全缓解19.23%(5/26),部分缓解53.84%(14/26),进展15.37%(4/26),1、2、3年生存率分别为80.75%、53.84%、30.76%。副作用主要为腹痛,腹泻。结论:三维适形放疗是安全的,能在一定程度上缓解病人的症状,治疗有一定的效果。     

康莱特加同步放化疗治疗局部晚期非小细胞肺癌的临床研究

Objective To evaluate the clinical effects and toxicity of concurrent chemoradiotherapy combined with Kanglaite injection in the treatment of regionally advanced unresectable non-small cell lung cancer. Methods 48 patients with regionally advanced unresectable non-small cell lung cancer were randomized to two groups, 25 patients in the combination group (concurrent chemoradiotherapy Kanglaite) and 23 patients in the control group (concurrent chemoradiotherapy).The combination group received chemotherapy of vinorelbine (NVB) plus cisplatin (DDP) regimen, radiotherapy was given with conventional fraction in 2 Gy per fraction and five fractions per week concurrently. The total tumor doses were 56-60Gy. Combined with Kanglaite injection 200 mL/d for twenty-one days for two courses in the combination group, the control group was chemoradiotherapy only. Effects and toxicities were evaluated according to the criteria of WHO. Results The CR rates in the combination group and control group were 24.0% (6/25) and 13.0% (3/23), respectively (P ＞ 0.05). Response (CR PR) rates of combination group were 76.0 % (19/25) and 69.6% (16/23) in control group, P ＞ 0.05. The incidence rates of grades 3-4 leukocytopenia, grades 3-4 digestive system (nausea and vomiting) and grades 3-4 esophagitis in the combination group and control group were 40.0% (10/25), 8.0% (2/25), 16.0% (4/25) and 69.6% (16/23), 34.8% (8/23), 43.5%(10/23), respectively (P ＜ 0.05). KPS and body weight score significantly increased in combination group after the combined treatment, P ＜ 0.05. Conclusion Concurrent chemoradiotherapy combined with Kanglaite injection can relieve side effects of chemoradiotherapy in the treatment of regionally advanced unresectable non-small cell lung cancer, and improve quality of life. Kanglaite injection may increase effective rate of regionally advanced unresectable non-small cell lung cancer combined with concurrent chemoradiotherapy.     

老年人非小细胞肺癌三维适形放疗的疗效分析

目的探讨三维适形放射治疗（3DCRT）对老年人非小细胞肺癌（NSCLC）的临床疗效和毒副反应。方法58例非小细胞肺癌患者采用三维适形放射治疗,照射剂量DT2．0Gy／次,5次／周,DT总量64Gy-70Gy;放疗后1—3个月行胸部CT检查评价疗效。结果58例患者中,完全缓解（CR）17例,部分缓解（PR）33例,稳定（SD）6例,进展（PD）2例,总有效率86．2％（50／58）;毒副作用以放射性食管炎及放射性肺炎为主,但均可耐受。结论三维适形放射治疗对老年人非小细胞肺癌患者的近期疗效较好,且不良反应较轻,可耐受。     

Ⅲ期非小细胞肺癌适形放疗加吉西他滨和顺铂同步化疗36例临床疗效观察

Objective: To study the toxicities and efficacy of concurrent gemcitabine plus cisplatin combined with three-dimensional conformal radiotherapy for stage Ⅲ non-small cell lung cancer (NSCLC). Methods: Thirty-six patients with pathologically diagnosed NSCLC received radiotherapy and concurrent chemotherapy. There were 22 patients with stage llla and 14 patients with lllb. Radiotherapy was given a total of 60-70 Gy in conventional fractionation. Chemotherapy included gemcitabine (600 mg/m2) and cisplatin (20 mg/m2), once per week. Results: Thirty-two patients received a total dose of 60-72 Gy. Two patients received 56 Gy and another two patients received 58 Gy. Thirty-four patients received 4-6 weeks of chemotherapy, while two patients received only 2 weeks of chemotherapy. The overall response rate (CR + PR), complete response rate (CR), partially response rate (PR) were 63.3% (30/36), 11.1% (4/36) and 72.2% (26/36) respectively. The median follow-up duration was 18.4 months. The 1-and 2-year overall survival rates were 77.8% (28/36) and 55.6% (20/36),respectively. Conclusion: Concurrent gemcitabine and cisplatin combined with three-dimensional conformal radiotherapy for stage Ⅲ non-small cell lung cancer is effective and well tolerated. Lone-term results need further study.     

三维适形低分割高剂量放射治疗非小细胞肺癌的临床探讨

目的：观察非小细胞肺癌行三维适形低分割高剂量放射治疗的疗效与并发症,探讨适合的分割模式和照射剂量。方法：回顾性分析682例非小细胞肺癌,采用三维适形放射治疗,90％-95％的剂量曲线覆盖胛V,单次分割剂量5Gy,1次／日或隔日,3—5次／周,DT50～70Gy／10—14次,中位照射剂量60Gy／12次,等效生物剂量88—90Gy。结果：682例患者中,完全缓解（CR）87例（12．8％）,部分缓解（PR）561例（82．2％）,总有效率（CR＋PR）为95％,其中111级以上放射性肺炎发生率5．2％（36／682）,未出现明显的放射性食管炎。结论：非小细胞肺癌采用三维适形低分割高剂量放射治疗（5Gy／次,每周3—5次,中位照射剂量60Gy／12次）,是相对安全的;而且局部控制率高,有较好的近期疗效,并发症低,值得推广使用。