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排序方式: 共有19条查询结果,搜索用时 31 毫秒
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目的:探讨放疗联合化疗对局限期小细胞肺癌时放疗的时机选择。方法将将72例局限期小细胞肺癌患者随机分为A、B、C、D四组,各18例,分别于化疗1个周期、2个周期、3个周期后及化疗结束后进行放疗,观察各组的疗效及不良反应。结果 A组治疗效果最佳,但不良反应剧烈,D组不良反应最低,但治疗效果不及其他三组,C组在获得良好治疗效果的同时不良反应患者能够耐受。结论治疗局限期小细胞肺癌化疗3个周期后进行放疗时机最佳。  相似文献   
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Background

The hypothesis of this retrospective study was that the duration of twice-daily (BID) thoracic radiotherapy (TRT) and time from the start of any treatment to the end of chest irradiation (SER) would predict outcomes in limited-disease small-cell lung cancer.

Materials and Methods

All 81 patients received 45 Gy in 30 fractions BID with a ≥ 6-hour interval and concurrent chemotherapy of platinum and etoposide.

Results

The median radiotherapy duration was 25 days (range, 21-38 days). The 5-year overall survival rates were 26.2% (95% confidence interval [CI], 14.3%-38.0%), and the median survival time was 30 months (95% CI, 15.5-44.5 months). Using multivariate regression analysis, the significant predictors of survival were the sum of the diameters of the primary tumor and metastatic lymph nodes, male gender, age ≥ 60 years, and the duration of BID-TRT (hazard ratio [HR], 1.15; 95% CI, 1.06-1.25; HR, 2.38; 95% CI, 1.13-5.02; HR, 2.38; 95% CI, 1.10-5.17; and HR, 1.08; 95% CI, 1.01-1.15, respectively). A total of 70 of 81 patients (86%) received radiotherapy during the first chemotherapy cycle. The median SER was 29 days (range, 21-109 days). The 5-year local control rate was 48.7% (95% CI, 33.9%-63.6%). The significant predictors of local control were the sum of the diameters of the primary tumor and metastatic lymph nodes, age ≥ 60 years, and SER (HR, 1.18; 95% CI, 1.06-1.31; HR, 4.18; 95% CI, 1.23-14.24; and HR, 1.02; 95% CI, 1-1.04, respectively).

Conclusions

The duration of BID-TRT and SER were identified as one of the significant predictors of survival and local control in limited-disease small-cell lung cancer treated with concurrent chemoradiotherapy at 45 Gy in 30 fractions, respectively.  相似文献   
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目的 探讨2种不同的放射治疗技术治疗局限期小细胞肺癌时,对靶区和危及器官物理剂量学的影响。 方法 回顾性分析10例局限期小细胞肺癌患者。每例患者在总疗程中需重新定位1次,2个阶段中每阶段均制定常规放疗和三维适形放疗计划(均采用Cadplan R 3.1.2治疗系统)。总剂量为50 Gy。用剂量体积直方图评价2个阶段靶区和危及器官的剂量参数。 结果第1阶段治疗适形放疗在计划靶体积1(PTV1)的均匀指数(HI) 值、PTV2的适形指数(CI)值、健肺的V30和健肺的平均剂量上优于常规放疗。第2阶段治疗适形放疗在PTV1的CI值、平均剂量、HI值优于常规放疗,PTV2的CI值、平均剂量上也优于常规放疗。 结论 三维适形放射治疗的优势在于更好的满足CI和HI,但对于危及器官的保护上与常规放疗无明显区别。  相似文献   
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目的 评估CT引导下125I放射性粒子植入联合全身化疗治疗局限期小细胞肺癌(limited-stage small cell lung cancer LS-SCLC)的临床疗效及影响预后因素。方法 2008年6月至2012年6月在天津医科大学第二医院接受125I粒子植入联合全身化疗治疗的LS-SCLC患者128例。采用χ2检验对患者近期疗效影响因素进行分析。采用Kaplan-Meier法计算生存率,Log-rank进行单因素分析,采用Cox比例风险模型进行多因素分析。结果 全组128例患者治疗后,6个月总有效率86.7%(111/128)。1、2、3年生存率分别为77.9%、39.8%、28.0%;中位生存期21.0个月。单因素分析结果显示,年龄、一般状态(performance status,PS)、术前血红蛋白、吸烟指数、肿瘤直径、术前神经元特异性烯醇化酶(neuron-specific enolase,NSE)、是否接受预防性全脑照射(prophylactic cranial irradiation,PCI)、化疗周期数、化疗疗效、处方剂量、术后D100、治疗模式均可影响LS-SCLC患者的生存。多因素分析结果显示,年龄、PS评分、术前血红蛋白、肿瘤直径、处理方剂量、化疗周期数、化疗疗效及治疗模式是LS-SCLC的独立预后因素。全组术中气胸29例占22.7%,咯血16例,占12.5%。结论 125I放射性粒子植入治疗LS-SCLC显示了较好的疗效,年龄、PS评分、术前血红蛋白、肿瘤直径、PD、化疗周期数、化疗疗效及治疗模式为LS-SCLC患者预后的主要影响因素。  相似文献   
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背景与目的 在局限期小细胞肺癌(limited-stage small cell lung cancer,LSCLC)的放化疗综合治疗中,放疗靶区等方面尚存争议.本研究旨在前瞻性比较LSCLC经诱导化疗后按不同靶区范围进行放疗的局部控制率和毒副反应的差异及对生存的影响.方法 LSCLC患者,经EP方案诱导化疗2周期后,随机分为研究组和对照组,分别按照化疗后和化疗前原发灶范围勾画放疗靶区(gross tumor volume-tumor,GTV-T),区域淋巴结靶区(gross tumor volume-nodal,CTV-N)两组均包括达到诊断标准的淋巴结所在的结区.放疗45 Gy/30次/19天,开始于化疗后1周-2周,放疗中按期进行第3周期化疗.放疗后再行3周期化疗.完全缓解者行预防性全脑照射(prophylactic cranial irradiation,PCI).结果 研究组与对照组分别入组37例、40例患者.局部复发率分别为32.4%、28.2%(P=0.80),其中单独照射野外复发率分别为3.096、2.6%(P=0.91),且均位于原发病灶同侧锁骨上区.纵隔型N3是照射野外复发危险因素(P=0.02,OR=14.13,95%CI:1.47-136.13);放疗期间发生I度、Ⅱ度体重减轻分别为29.4%、5.9%和56.4%、7.7%(P=0.04);0度-I度和II度-III度后期放射性肺损伤发生率分别为97.1%、2.96%和84.6%、15.4%(P=0.07).研究组和对照组中位生存时间分别为22.1个月和26.9个月;1、2、3年总生存率分别为77.9%、44.4%、37.3%及75.8%、56.3%、41.7%(P=0.79).结论 本研究结果显示仅照射化疗后原发灶范围及阳性淋巴结区未降低局部控制率和总生存率,而放疗毒性降低.但目前样本量尚未达到设计要求,最终结论需继续扩大样本数后得出.  相似文献   
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《Journal of thoracic oncology》2017,12(12):1834-1844
IntroductionPrimary small cell carcinoma of the esophagus (PSCCE) is characterized by high malignancy, early metastasis, and poor prognosis. This retrospective study aimed to review the clinical characteristics of patients with limited-stage PSCCE and determine the relevant prognostic factors and optimal treatment strategies.MethodsWe retrospectively evaluated 152 consecutive patients with limited-stage PSCCE between January 2007 and December 2015. Prognostic factors were analyzed using univariate analysis and a Cox regression model. Subgroup analysis was applied to evaluate the effect of treatment strategy on survival.ResultsUnivariate and multivariate analyses showed that treatment modality (p = 0.034) and N stage (p = 0.002) were independent prognostic factors. Patients with stage I or IIA PSCCE who underwent an operation alone exhibited better survival than those who did not undergo an operation (median survival time 29 versus 17.4 months [p = 0.031]), and postoperative adjuvant therapy did not increase overall survival or disease-free survival (p > 0.05). The overall survival rate of patients with stage III PSCCE who underwent neoadjuvant chemotherapy (nCT) was significantly better than that of patients who underwent an operation alone or did not undergo an operation (p = 0.021 and p = 0.026, respectively); additionally, nCT could increase disease-free survival (p = 0.031).ConclusionsTreatment modalities and N stage are independent prognostic factors. Radical esophagectomy should be considered as the primary treatment for stage I or IIA PSCCE, and nCT followed by esophagectomy could be an effective treatment option for stage III PSCCE. Multicenter randomized studies are required to confirm the role of nCT in the management of limited-stage PSCCE.  相似文献   
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目的 分析局限期小细胞肺癌(small cell lung cancer, SCLC)患者采用累及野照射(involved field radiation therapy, IFRT)时各淋巴结区受照剂量与淋巴结失败的关系。方法 在接受根治性放疗的局限期SCLC患者原治疗计划中勾画第1至10组淋巴结引流区,记录每组淋巴结转移情况及其所受目的性或附带照射剂量。照射野内、野边缘、野外失败分别定义为失败淋巴结体积位于80%处方剂量曲线内、80%~20%、20%处方剂量曲线外。结果 勾画76例患者1 216组淋巴结引流区。中位随访时间17.4个月。初诊时各淋巴结区转移率超过50%的为4R(68.7%)、4L(57.9%)、10R(57.9%)、2R(56.6%)、7(51.3%)区。淋巴结区有阳性病灶时,均接受了处方剂量照射。而未发生转移时,受到平均附带照射剂量超过3 000 cGy的淋巴结区有:3P、4L、7、6、4R、5、2L。淋巴结中位无失败时间9.8个月。仅1例患者发生纵隔淋巴结照射野外失败。其余患者照射野外失败位于锁骨上区或原发病灶对侧肺门。结论 SCLC患者采用IFRT照射纵隔淋巴结区时,未发生转移的淋巴结区可以受到相当剂量的附带照射。而纵隔淋巴结照射野外失败较少见,与所受附带照射剂量贡献有关。  相似文献   
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