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Objective To analyze the outcomes of preoperative intracavitary brachytherapy plus sur-gery in patients with stage ⅠB2 and ⅡA bulky cervical cancer. Methods From January 2001 to January 2007, 77 patients with stage ⅠB2 and ⅡA bulky cervical cancer were included. The diameter of primary tumor was greater than 4 cm. Preoperative intracavitary brachytherapy with the total dose of 20-30 Gy (0.5 cm below the vaginal mucosa) was delivered by 2-3 fractions, one fraction per week. After an interval of 10-14 days, the efficacies of radiotherapy were evaluated and radical hysterectomy with pelvic lymphade-nectomy was performed. Then the treatment complications, clinicopathological characteristics, survival and recurrence were analyzed. Results The tumor shrinkage was observed in all the patients after intracavitary brachytherapy. The CR, PR and SD were 5% (4/77), 36% (28/77) and 58% (45/77), respectively. Radical hysterectomy was successfully performed in all patients. The complications of the combined therapy were mild and only 5 patients had grade Ⅱ or less hematological or gastrointestinal toxicities. The 5-year o-verall survival rate and pelvic recurrence rate were 83% and 12%, respectively. Conclusions Preoperative intracavitary brachytherapy of 20-30 Gy plus surgery is effective in the treatment of stage ⅠB2 and ⅡA bulky cervical cancer without increasing the treatment complications. 相似文献
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Objective To analyze the outcomes of preoperative intracavitary brachytherapy plus sur-gery in patients with stage ⅠB2 and ⅡA bulky cervical cancer. Methods From January 2001 to January 2007, 77 patients with stage ⅠB2 and ⅡA bulky cervical cancer were included. The diameter of primary tumor was greater than 4 cm. Preoperative intracavitary brachytherapy with the total dose of 20-30 Gy (0.5 cm below the vaginal mucosa) was delivered by 2-3 fractions, one fraction per week. After an interval of 10-14 days, the efficacies of radiotherapy were evaluated and radical hysterectomy with pelvic lymphade-nectomy was performed. Then the treatment complications, clinicopathological characteristics, survival and recurrence were analyzed. Results The tumor shrinkage was observed in all the patients after intracavitary brachytherapy. The CR, PR and SD were 5% (4/77), 36% (28/77) and 58% (45/77), respectively. Radical hysterectomy was successfully performed in all patients. The complications of the combined therapy were mild and only 5 patients had grade Ⅱ or less hematological or gastrointestinal toxicities. The 5-year o-verall survival rate and pelvic recurrence rate were 83% and 12%, respectively. Conclusions Preoperative intracavitary brachytherapy of 20-30 Gy plus surgery is effective in the treatment of stage ⅠB2 and ⅡA bulky cervical cancer without increasing the treatment complications. 相似文献
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目的 探讨中晚期宫颈癌三维后装腔内放疗中三通道施源器的通道设计与OAR、靶区剂量间关系。方法 调取2015—2016年我院三维腔内治疗的15例中晚期宫颈癌数据,其中30次“阴道卵形两半球+宫腔管”的三通道施源器剂量参数纳入研究。在原靶区和OAR勾画、处方剂量不变基础上保留宫腔管单通道施源器,重新进行三维腔内照射设计的剂量参数作为对照组,配对t检验两组OAR剂量参数。结果 三通道、单通道施源器组直肠D2cc分别为(387.8±96.8)、(340.8±88.1) cGy;两组膀胱和乙状结肠D2cc分别为(443.2±87.5)、(719.4±243.0) cGy和(330.3±88.8)、(383.1±105.6) cGy。三通道组满足直肠(D2cc≤500 cGy)、膀胱(D2cc≤550 cGy)和乙状结肠(D2cc≤500 cGy)计划限量,单通道组膀胱和乙状结肠D2cc受量分别为大于和部分大于计划限量。单通道组膀胱和乙状结肠D2cc受量高于三通道组(P均<0.05)。结论 宫颈癌三维腔内放疗中“阴道卵形两半球+宫腔管”三通道施源器比宫腔管单通道可有效降低膀胱和乙状结肠受量,有利于计划优化和剂量实施。 相似文献
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目的 探讨宫颈癌患者多次计划CT引导的三维近距离治疗可行性及对危及器官剂量学影响。
方法 10例接受根治性放疗的Ⅱb~Ⅲb期宫颈癌患者每次腔内放疗前行CT扫描并勾画高危临床靶体积(HRCTV)及膀胱、直肠、乙状结肠。PLATO14.3计划系统设计,HRCTV采用D90,危及器官采用D2 cm3评价。处方剂量A点7 Gy单次后进行几何优化,直肠、乙状结肠D2 cm3≤5 Gy,膀胱D2 cm3≤5.5 Gy。第1次腔内治疗优化计划为标准计划,每次腔内放疗进行CT扫描制定几何优化计划。两组计划参数行独立样本t检验,危及器官体积与参数相关性采用Pearson法相关分析。
结果
标准计划与优化计划HRCTV的D90相似(t=-0.03~-1.61,P=0.978~0.128),膀胱、直肠、乙状结肠D2 cm3不同(t=-2.27~-3.35,P=0.049~0.004)。膀胱、直肠、乙状结肠体积与各自D2 cm3均呈正相关(r=0.314、0.407、0.539,P=0.026、0.003、0.000)。
结论 CT引导的宫颈癌三维近距离治疗中多次计划有必要,危及器官体积对治疗CTV剂量无影响,但体积越大受照最多部位的D2 cm3越高。 相似文献
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宫颈癌发病率居我国女性生殖道恶性肿瘤之首,约80%宫颈癌患者在治疗过程中需要接受放射治疗,包括术后辅助放疗、根治性放疗和复发宫颈癌放疗。笔者拟分别对体外放射治疗(EBRT)和近距离放射治疗(BT)的研究进展、靶区勾画、实施方式、优势和不足进行阐述如下。 相似文献
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目的:探讨miR-19a与中晚期宫颈癌同步放化疗敏感性的相关性及可能作用机制。方法:收集行同步放化疗治疗的ⅡB~ⅢB期宫颈鳞状细胞癌患者20例,根据其治疗后6个月的近期治疗效果分为治疗敏感组和抗拒组,每组各10例,治疗前收集宫颈肿瘤组织并提取总RNA;利用TaqMan Real-time PCR法检测miR-19a在两组间的表达情况,统计分析其与同步放化疗敏感性的相关性。结果:敏感组随访10~20个月,截止末次随访均未发现肿瘤复发。抗拒组治疗中肿瘤进展2例,治疗结束6个月内肿瘤残存或出现新发病灶者8例。两组患者在临床分期、年龄、组织分级、淋巴结转移、局部肿瘤大小、Scc-Ag水平和治疗时间各个临床因素差异无统计学意义,P值均>0.05;miR-19a在治疗抗拒组中的表达水平约为1.0±0,敏感组为4.80±1.15,两组比较差异有统计学意义,P<0.05。结论:miR-19a与中晚期宫颈癌同步放化疗敏感性相关,可能成为预测宫颈肿瘤内在放化疗敏感性的标志,对尽早施行个体化治疗以改善预后有重要意义。 相似文献