Intraoperative radiofrequency ablation combined with ^(125)iodine seed implantation for unresectable pancreatic cancer

AIM: To evaluate the feasibility, efficacy and safety of intraoperative radiofrequency ablation (RFA) combined with 125 iodine seed implantation for unresectable pancreatic cancer. METHODS: Thirty-two patients (21 males and 11 females) at the age of 68 years (range 48-90 years) with unresectable locally advanced pancreatic cancer admitted to our hospital from January 2006 to May 2008 were enrolled in this study. The tumor, 4-12 cm in diameter, located in pancreatic head of 23 patients and in pancreatic body and tail of 9 patients, was found to be unresectable during operation. Diagnosis of pancreatic cancer was made through intraoperative biopsy. Patients were treated with FRA combined with 125 iodine seed implantation. In brief, a RFA needle was placed, which was confirmed by intraoperative ultrasound to decrease the potential injury of surrounding vital structures, a 125 iodine seed was implanted near the blood vessels and around the tumor border followed by bypass palliative procedure (cholangio-jejunostomy and/or gastrojejunostomy) in 29 patients.RESULTS: The serum CA 19-9 level was decreased from 512 ± 86 U/mL before operation to 176 ± 64 U/mL, 108 ± 42 U/mL and 114 ± 48 U/mL, respectively, 1, 3 and 6 mo after operation (P < 0.05). The pain score on day 7 after operation, 1 and 3 mo after combined therapy was decreased from 5.86 ± 1.92 before operation to 2.65 ± 1.04, 1.65 ± 0.88 and 2.03 ± 1.16, respectively, after operation (P < 0.05). The rate of complete response (CR), partial response (PR), stable disease (SD), progressive disease (PD) in 32 patients was 21.8% (7/32), 56.3% (18/32), 15.6% (5/32) and 6.3% (2/32), respectively, 6 mo after operation, with a median overall survival time of 17. 5 mo. The median survival time of patients at stage Ⅲ was longer than that of those at stage Ⅳ (19 mo vs 10 mo, P = 0.0026). The median survival time of patients who received and did not receive chemotherapy after operation was 20 mo and 16 mo, respectively (P = 0.0176). Of the 32 patients, 3 (10.6%) experienced postoperative complications including transient biliary leaks in 2 patients and acute pancreatitis in 1 patient. All the patients recovered well after conservative support treatment. CONCLUSION: Intraoperative RFA combined with 125 iodine seed implantation is a feasible and safe procedure for unresectable pancreatic cancer with acceptable minor complications, and can prolong the survival time of patients, especially those at stage Ⅲ.

A pilot study on combination of cryosurgery and ^(125)iodine seed implantation for treatment of locally advanced pancreatic cancer

AIM: To study the therapeutic value of combination o cryosurgery and 125iodine seed implantation for locally advanced pancreatic cancer. METHODS: Forty-nine patients with locally advanced pancreatic cancer (males 36, females 13), with a median age of 59 years, were enrolled in the study. Twelve patients had liver metastases. In all cases the tumors were considered unresectable after a comprehensive evaluation. Patients were treated with cryosurgery, which was performed intraoperatively or percutaneously unde guidance of ultrasound and/or computed tomography (CT), and 125iodine seed implantation, which was performed during cryosurgery or post-cryosurgery under guidance of ultrasound and/or CT. A few patients received regional celiac artery chemotherapy. RESULTS: Thirteen patients received intraoperative cryosurgery and 36 received percutaneous cryosurgery Some patients underwent repeat cryosurgery. 125Iodine seed implantation was performed during freezing procedure in 35 patients and 3-9 d after cryosurgery in 14 cases. Twenty patients, 10 of whom had hepaticmetastases received regional chemotherapy. At 3 mo after therapy, CT was repeated to estimate tumor response to therapy. Most patients showed varying degrees of tumor necrosis. Complete response (CR) of tumor was seen in 20.4% patients, partial response (PR), in 38.8%, stable disease (SD), in 30.6%, and progressive disease (PD), in 10.2%. Adverse effects associated with cryosurgery included upper abdomen pain and increased serum amylase. Acute pancreatitis was seen in 6 patients one of whom developed severe pancreatitis. All adverse effects were controlled by medical management with no poor outcome. There was no therapy-related mortality. During a median follow-up of 18 mo (range of 5-40), the median survival was 16.2 mo, with 26 patients (53.1%) surviving for 12 mo or more. Overall, the 6-, 12-, 24- and 36-mo survival rates were 94.9%, 63.1%, 22.8% and 9.5%, respectively. Eight patients had survival of 24 mo or more. The patient with the longest survival (40 mo) is still living without evidence of tumor recurrence. CONCLUSION: Cryosurgery, which is far less invasive than conventional pancreatic resection, and is associated with a low rate of adverse effects, should be the treatment of choice for patients with locally advanced pancreatic cancer. 125Iodine seed implantation can destroy the residual surviving cancer cells after cryosurgery. Hence, a combination of both modalities has a complementary effect.

Implantation of Radioactive ^(125)I Seeds Improves the Prognosis of Locally Advanced Pancreatic Cancer Patients:A Retrospective Study

Locally advanced pancreatic cancer is associated with a very poor prognosis. This study was performed to evaluate whether patients with locally advanced pancreatic cancer benefit from 125 ^I seed implantation. This retrospective study included 224 patients with locally advanced pancreatic cancer, with 137 patients（61.2%） in the implantation（IP） group and 87（38.9%） in the non-implantation（NIP） group. The survival status, complications and objective curative effects were compared between the groups. The average operative time in the IP group was significantly longer than that in the NIP group（243±51 vs. 214±77 min）. The tumor response rates were 9.5% and 0 at the 2nd month after surgery in the IP and NIP groups, respectively（P〈0.05）. The IP group exhibited a trend toward pain relief at the 6th month after surgery. The global health status scores of the IP group were higher than those of the NIP group at the 3rd and 6th month after surgery. The median survival time in the IP group was significantly longer than that in the NIP group. In conclusion, patients with locally advanced pancreatic cancer can benefit from 125 I seed implantation in terms of local tumor control, survival time, pain relief and quality of life.

Radioactive ^125I seed implantation for locally advanced pancreatic cancer:A retrospective analysis of 50 cases

BACKGROUND Pancreatic cancer is one of the common malignant tumors of the digestive system,and radical resection is the first choice of treatment for pancreatic cancer.If patients with locally advanced pancreatic cancer cannot be treated in time and effectively,their disease often develops rapidly and their survival period is very short.AIM To evaluate the therapeutic effect of ^125I seed implantation in patients with locally advanced pancreatic cancer.METHODS The demographics and perioperative outcomes of a consecutive series of patients who underwent ^125I seed implantation to treat locally advanced pancreatic cancer between January 1,2017 and June 30,2019 were retrospectively analyzed.According to the results of preoperative computed tomography or magnetic resonance imaging,the treatment planning system was used to determine the area and number of ^125I seeds implanted.During the operation,^125I seeds were implanted into the tumor under the guidance of intraoperative ultrasound,with a spacing of 1.5 cm and a row spacing of 1.5 cm.For patients with obstructive jaundice and digestive tract obstruction,choledochojejunostomy and gastroenterostomy were performed simultaneously.After operation,the patients were divided into a non-chemotherapy group and a chemotherapy group that received gemcitabine combined with albumin-bound paclitaxel treatment.RESULTS Among the 50 patients,there were 29 males and 21 females,with a mean age of 56.9±9.8 years.The main reason for the failure of radical resection was superior mesenteric artery invasion(37,74%),followed by superior mesenteric vein invasion(33,66%).Twenty-one(62%)patients underwent palliative surgery and postoperative pain relief occurred in 40(80%)patients.The estimated blood loss in operation was 107.4±115.3 mL and none of the patient received blood transfusion.The postoperative hospital stay was 7.5±4.2 d;one patient had biliary fistula and three had pancreatic fistula,all of whom recovered after conservative treatment.After operation,26 patients received chemotherapy and 24 did not.The 1-year survival rate was significantly higher in patients who received chemotherapy than in those who did not(60.7%vs 35.9%,P=0.034).The mean overall survival of patients of the chemotherapy group and nonchemotherapy group was 14 and 11 mo,respectively(χ^2=3.970,P=0.046).CONCLUSION Radioactive ^125I seed implantation combined with postoperative chemotherapy can prolong the survival time,relieve pain,and improve the quality of life of patients with locally advanced pancreatic cancer.

Radioactive 125I seed implantation for pancreatic cancer with unexpected liver metastasis:A preliminary experience with 26 patients

BACKGROUND Preoperative diagnosis rate of pancreatic cancer has increased year by year.The prognosis of pancreatic cancer patients with unexpected liver metastasis found by intraoperative exploration is very poor,and there is no effective and unified treatment strategy.AIM To evaluate the therapeutic effect of radioactive 125I seed implantation for pancreatic cancer patients with unexpected liver metastasis.METHODS The demographics and perioperative outcomes of patients who underwent 125I seed implantation to treat pancreatic cancer with unexpected liver metastasis between January 1,2017 and June 1,2019 were retrospectively analyzed.During the operation,125I seeds were implanted into the pancreatic tumor under the guidance of intraoperative ultrasound,with a spacing of 1.5 cm and a row spacing of 1.5 cm.For patients with obstructive jaundice and digestive tract obstruction,choledochojejunostomy and gastroenterostomy were performed simultaneously.After operation,the patients were divided into a non-chemotherapy group and a chemotherapy group that received gemcitabine combined with albumin-bound paclitaxel treatment.RESULTS Preoperative imaging evaluation of all patients in this study showed that the tumor was resectable without liver metastasis.There were 26 patients in this study,including 18 males and 8 females,aged 60.5±9.7 years.The most common tumor site was the pancreatic head(17,65.4%),followed by the pancreatic neck and body(6,23.2%)and pancreatic tail(3,11.4%).Fourteen patients(53.8%)underwent palliative surgery and postoperative pain relief occurred in 22 patients(84.6%).The estimated blood loss in operation was 148.3±282.1 mL and one patient received blood transfusion.The postoperative hospital stay was 7.6±2.8 d.One patient had biliary fistula,one had pancreatic fistula,and all recovered after conservative treatment.After operation,7 patients received chemotherapy and 19 did not.The 1-year survival rate was significantly higher in patients who received chemotherapy than in those who did not(68.6%vs 15.8%,P=0.012).The mean overall survival of patients in the chemotherapy group and non-chemotherapy group was 16.3 mo and 10 mo,respectively(χ2=7.083,P=0.008).CONCLUSION Radioactive 125I seed implantation combined with postoperative chemotherapy can prolong the survival time and relieve pain of pancreatic cancer patients with unexpected liver metastasis.

Intraoperative permanent implantation of radioactive I-125 seed for local advanced non small lung cancer

Objective： To study the clinical efficacy and methods of permanent implantation of radioactive I-125 seed in surgery for local advanced non small lung cancer （LANSCLC）. Methods： From Apr. 2004 to Apr. 2006, the I-125 seeds were implanted into 30 patients with LANSCLC in surgery. The numbers of seeds were 10-40. The chemotherapy was performed in 10 to 14 days after operation. Results： There was no operative death, and the distribution of seeds and complications were reviewed by CT and X-ray after treatment. The distribution of seeds was satisfactory in all patients. The complete response rate （CR） was 56.6% and the part response （PR） was 26.6%. The overall response rate was 83.3% after 4-24 months of surgery. There was no one occurred radiation pneumonia. Prospective efficacy await further follow-up. Conclusion： Permanent implantation of 1-125 seed in surgery for LANSCLC, is a safe and effective method with mild complications.

Relationship between miR-7-5p expression and ^(125)I seed implantation efficacy in pancreatic cancer and functional analysis of target genes

Objective The aim of this study was to investigate the relationship between miR-7-5p expression and intertissue-^(125)I irradiation sensitivity in pancreatic cancer tissues and to analyze the function of target genes.Methods Thirty-seven patients with unresectable pancreatic ductal adenocarcinoma(PDAC)treated with radioactive ^(125)I seed implantation were enrolled.RT-PCR was used to detect the expression level of miR-7-5p in cancer tissues and analyze the relationship between miR-7-5p expression and ^(125)I radiation sensitivity.Bioinformatic software and online tools were used to predict the miR-7-5p target genes and analyze their functional annotation and pathway enrichment.Results Radioactive ^(125)I seed implantation was followed up for 2 months.The objective response rate of the miR-7-5p high expression group was 65.0%(13/20),whereas the objective response rate of the miR-7-5p low expression group was 5.88%(1/17),and the difference between the two groups was statistically significant(χ^(2)=13.654,P<0.001).A total of 187 target genes were predicted using three databases.GO functional annotation showed that target genes were mainly involved in cellular response to insulin stimulus,regulation of gene expression by genetic imprinting,cytosol,peptidyl-serine phosphorylation,bHLH transcription factor binding,cargo loading into vesicles,cellular response to epinephrine stimulus,and nucleoplasm.KEGG pathway enrichment analysis showed that target genes were mainly involved in the ErbB signaling pathway,HIF-1 signaling pathway,axon guidance,longevity regulatory pathway,endocrine resistance,glioma,choline metabolism in cancer,and EGFR tyrosine kinase inhibitor drug resistance.Molecular complex detection analysis by Cytoscape revealed that PIGH,RAF1,EGFR,NXT2,PIK3CD,PIK3R3,ERBB4,TRMT13,and C5orf22 were the key modules of miR-7-5p target gene clustering.Conclusion The expression of miR-7-5p in pancreatic cancer tissues positively correlated with the radiosensitivity of ^(125)I seeds.Via targeted gene regulation,miR-7-5p acts on the network of multiple signaling pathways in PDAC and participates in its occurrence and development.Thus,miR-7-5p may become a predictive index of ^(125)I seed implantation therapy sensitivity in PDAC patients.

^(125)Ⅰ粒子治疗肺鳞癌术后剂量参数与疗效关系初探

目的探讨肺鳞癌^(125)Ⅰ粒子植入术后各剂量参数与肿瘤体积缩小比的关系,并得出预测疗效的最佳参数。方法回顾性分析2015年1月至2021年3月本院^(125)Ⅰ粒子植入治疗的26例肺鳞癌患者,共28个病灶。所有患者术后即刻行剂量验证,得出术后D_(90)(90%靶体积所接受的最小周边剂量)。术后规律随访,根据患者实际随访时的CT图像计算术后t个月肿瘤体积缩小比(R_(t))、术后1个月肿瘤体积缩小比(R_(1))、初月理论吸收剂量(D_(1m))、初月疗效校正吸收剂量(D_(1e))和初月敏感性校正吸收剂量(D_(1s))。将术后D90与R1进行曲线拟合,将术后D_(90)、D_(1m)、D_(1e)、D_(1s)与R_(t)进行曲线拟合,寻找各参数与肿瘤体积缩小比的关联性。结果术后D_(90)、D_(1m)、D_(1e)、D_(1s)、R_(t)和R_(1)分别为(113.56±27.61)Gy、(35.2±9.8)Gy、(45.8±17.9)Gy、(38.6±20.7)Gy、(34±39)%和(27±27)%。术后D_(90)与R_(1),术后D_(90)、D_(1m)、D_(1e)、D_(1s)与R_(t)均为正相关,关系方程分别为y=0.00001x^(2)+0.0019x-0.1331(R^(2)=0.234)、y=-0.0001x^(2)+0.0292x-1.4459(R^(2)=0.210)、y=0.5222lnx-1.4938(R^(2)=0.161)、y=-0.0004x^(2)+0.0489x-0.9973(R^(2)=0.503)和y=0.3909lnx-1.0304(R^(2)=0.287)。结论术后D_(90)、D_(1m)、D_(1e)、D_(1s)与术后肿瘤体积缩小比呈正相关,可用于预测肺鳞癌^(125)Ⅰ粒子植入患者的疗效,相较于术后D_(90)和D_(1m),D_(1e)与D_(1s)预测疗效可能更优。

^(125)I粒子植入在难治性甲状腺癌治疗中的应用价值

作为近距离放射治疗的一种,^(125)I粒子植入已广泛应用于各种不可切除或局部复发的恶性肿瘤治疗中,均展现出良好的治疗效果与前景。由于具有疗效确切、安全微创的特点,^(125)I粒子植入为不能再次手术、^(131)I治疗不可控及不适合靶向治疗的持续或复发甲状腺癌提供了一种可选择的手段。该文将简要介绍^(125)I粒子植入在难治性甲状腺癌局部复发灶及其转移灶治疗和病灶术前定位中的应用。

赋能管理模式在^(125)I粒子植入术后放射防护中的效果研究

目的探讨赋能管理模式在^(125)I粒子植入术后放射防护中的作用。方法选择医院2020年10月至2022年10月首次进行^(125)I粒子植入的患者66例,随机分为对照组和实验组,对照组(n=33)实施传统健康教育;实验组(n=33)在传统健康教育的基础上实施赋能管理模式,评价两组患者在自我效能感、健康教育效果及防护依从性等方面的差异。结果实验组患者在自我效能感、健康教育效果及防护依从性等方面均高于对照组,差异有统计学意义(P<0.05)。结论运用赋能管理模式实施健康教育,能够提高^(125)I粒子植入术后健康教育效果,从而让患者更正确地认识^(125)I粒子治疗,使自我效能感加强,有利于提高术后防护依从性,保护周围人群的安全,值得临床推广。

上海市^(125)I粒子植入治疗技术质量控制研究现状

目的:分析探讨2022年上海市开展^(125)I粒子植入治疗技术的各医疗中心质量控制现状。方法:根据上海市核医学质量控制中心^(125)I粒子植入治疗技术评估表,对上海市16家医疗机构的20个相关科室的质量控制数据进行分析。结果:对医疗机构基本要求、人员基本要求、技术管理基本要求评估的36项质控内容中,最高符合率为100.00%(36/36),最低符合率为83.33%(30/36),同一家医院不同科室的管理和质量情况也有所不同;对于有关质控各项指标,植入指征正确率(平均)为98.75%,术前制订治疗计划率(平均)为94.74%,粒子活度复测率(平均)为25.13%,术后放射剂量验证率(平均)为83.81%,30 d内穿刺相关主要并发症发生率(平均)为5.67%,30 d内放射性损伤相关主要并发症发生率(平均)为0.85%,粒子植入治疗有效率(平均)为92.2%,30 d内全因死亡率(平均)为0.87%。2个月、4个月、6个月及1年的(平均)随访率分别为97.24%、91.9%、85.31%及71.91%,2个月、4个月、6个月及1年的(平均)生存率分别为96.81%、89.74%、81.31%及66.07%。结论:2022年上海市各医疗中心在^(125)I粒子植入治疗技术的质量控制中仍存在许多问题,各医疗中心应引起重视,按照上海市核医学质量控制中心^(125)I粒子植入治疗技术评估表的要求,完善科室规章制度,完全按照诊疗规范开展该项技术。

Prospective Clinical Study of ¹²⁵I Particle Permanent Implantation for Prostate Cancer

Objective: To investigate the clinical effect of 125I radioactive seed implantation and the treatment of prostate cancer with radical resection of prostate cancer. Methods: Within the period of the second phase, 62 cases of prostate cancer patients, aged from 46 to 87 years old, average 69 years old. In the treatment group, 30 cases were implanted with 125I radioactive particles via the rectum with the guidance of the rectum. 32 cases in the control group underwent radical prostatectomy. Results: All patients were operated successfully, the patients were followed up for 12 to 36 months. In the treatment group, the average particle size was 38 + 15. No serious complications caused by rectal puncture. 2 patients occurred 6 months after PSA increased significantly, systemic examination revealed bone metastases, and underwent endocrine therapy. In the control group, there were 2 cases of patients with PSA significantly increased in 5 months after surgery, and the external irradiation plus endocrine therapy. During the observation period, the survival rate of the patients who were implanted with 125I particles in the treatment group without progression was 93.3%. Control group, the cumulative PSA progression free survival rate was 93.7%. Conclusion: Patients with prostate cancer during the second phase, the clinical curative effect of the treatment of prostate cancer with the treatment of 125I of prostate cancer and the treatment of prostate cancer by using radical resection of prostate cancer are quite. This technology has the advantages of small trauma, quick recovery, low damage to normal tissue.

超声引导下放射性^(125)I粒子植入治疗转移性腹膜后去分化脂肪肉瘤1例

去分化脂肪肉瘤(DDLPS)是一种罕见的脂肪肉瘤亚型,预后不良。本病例报告描述了1例65岁中国女性的肝脏及腹膜后DDLPS,临床表现为无痛性腹部肿物。进行计算机断层扫描和超声检查发现瘤体较大且出现部分脏器转移,遂行腹膜后巨大肿瘤切除术及肝部分切除术。术后肿瘤免疫组织化学表现为S-100(+),SOX10(-),Desmin(+)。患者愈合良好,为控制转移病灶,术后三个月行超声引导下右侧腹膜后(肝肾间隙)肿瘤放射性^(125)I粒子植入治疗。通过粒子放射治疗,达到稳定病情的治疗目标。本病例报告对该患者的治疗及病例资料进行分析,从DDLPS的临床诊断、治疗和病理特点等方面对文献进行综述,以期提高诊疗水平。

放射性^(125)Ⅰ粒子源治疗中晚期肺癌的剂量学研究和临床观察

目的:观察放射性125Ⅰ粒子源治疗中晚期肺癌的疗效。方法:首先利用实体肿瘤等效材料,采用热释光剂量学方法,模拟实测了125I粒籽源植入瘤内后,瘤内外剂量分布,并对其剂量影响因素进行了详细研究;临床共对38例中晚期肺癌患者进行125I粒子种植,均采用电视胸腔镜辅助小切口下实施手术,进行临床观察。结果:根据实验研究结果确定125I粒子间距为1cm时能够达到治疗量(处方剂量145Gy);本组38例患者术后恢复顺利,手术后未发生出血、气胸、肺感染、肺不张等并发症。临床观察6个月,临床分析结果显示总缓解率为63.16%,咳嗽、气短、纳差、胸疼症状明显减轻,生活质量均有不同程度的改善(P<0.05)。结论:放射性125Ⅰ粒子源对于不能手术切除的中晚期肺癌是一种安全有效的治疗方法。

^(125)Ⅰ粒子肿瘤内植入联合吉西他滨治疗周围性非小细胞肺癌

目的探讨125Ⅰ粒子肿瘤内植入联合吉西他滨治疗周围性肺癌的临床价值。方法60例患者,经CT导引下经皮肺穿刺活检确诊为肺癌,腺癌43例(其中8例为肺泡细胞癌),鳞癌17例。临床分期Ⅰ期6例,Ⅱ期14例,Ⅲ期34例,Ⅳ期6例。所有患者均拒绝或无法手术,将患者随机分为2组:吉西他滨单药化疗组及吉西他滨化疗联合经皮穿刺CT导引下肿瘤内植入125Ⅰ粒子治疗组。结果吉西他滨组PR5例,SD14例,PD11例,总有效率为16%(5/30),疾病控制率为63%(19/30),临床受益率为37%(11/30);中位生存期为7个月,1年生存率为26%。吉西他滨联合治疗组CR5例,PR11例,SD8例,PD6例,总有效率为36%(16/30),疾病控制率为80%(24/30),临床受益率为56%(17/30),中位生存期为12.3个月,1年生存率为50%。差异有统计学意义(P<0.05)。治疗过程中吉西他滨单药组14例出现Ⅰ度骨髓抑制,9例出现皮疹,吉西他滨联合组11例出现皮疹,17例出现轻度骨髓抑制。结论125Ⅰ粒子肿瘤内植入联合吉西他滨治疗周围性肺癌疗效好,创伤小,不良反应发生率低。

食管癌^(125)Ⅰ粒子支架临床研究中文文献质量评价

目的评估我国^(125)Ⅰ内照射支架治疗食管癌文献的质量。方法按照循证医学标准,分别按不同年份对2010年6月前的不同设计类型文献的一般情况进行分类。由2名评阅者对文献进行质量评价,对评阅者的评价结果进行Kappa检验,检验结果的一致性。参照Jadad评分量表,计算随机对照试验(RCT)的Jadad得分,按照CONSORT声明修订版标准评估其质量。对临床对照试验(CCT)文献中的内容进行描述性分析。结果纳入临床治疗性文献54篇,其中叙述性研究39篇、RCT文献2篇、CCT文献13篇。2名评价者间Kappa值为0.815,说明评价的一致性较好。2篇RCT文献的Jadad评分均为1分;对照CONSORT声明修订版标准,"标题和摘要"部分平均得分0.500分,"引言"部分平均得分0.500分,"方法"部分平均得分0.325分,"结果"部分平均得分0.250分,"讨论"部分平均得分0.500分。13篇CCT中,纳入与排除标准明确者仅3篇(23.08%),疗效标准明确者12篇(92.31%);仅2篇(15.38%)提及"随机"字样,但没有1篇是完全随机,样本量≥60例者3篇(23.08%),有基线可比性者12篇(92.31%),无文献提到盲法,有统计学方法的12篇(92.31%),随访的13篇(100%),失访的1篇(7.69%),有11篇(84.62%)讨论时同时考虑了统计学意义和临床意义。结论我国食管癌125I粒子支架临床研究中文文献总体质量不高,证据的可信度级别较低,较循证医学标准质量差距较大。

化疗联合放射性^(125)Ⅰ粒子植入治疗晚期非小细胞肺癌疗效观察

目的观察放射性粒子125Ⅰ植入联合化疗治疗晚期非小细胞肺癌(NSCLC)的临床疗效和安全性。方法 68例ⅢB~Ⅳ期NSCLC患者分为粒子植入联合化疗组(实验组)32例和化疗组(对照组)36例,化疗方案为吉西他滨联合顺铂,观察有效率和无进展生存期以及毒副作用,有效率和毒副反应率采用χ2检验,Kaplan-Meier生存曲线分析无进展生存时间,无进展生存率比较采用Log-rank检验。结果试验组和对照组的总体反应率分别为75%和44.44%。2组间有显著的统计学差异(P<0.05),中位无进展生存期分别为6.5个月和4.5个月,统计学差异显著(P<0.05),实验组显著长于对照组。所有的副作用/并发症可控,实验组有较高的血痰和胸痛发生率,两组在气胸、发热、骨髓抑制方面无差异,未观察到粒子游走。结论放射性粒子125Ⅰ植入联合化疗治疗晚期非小细胞肺癌有较好的临床疗效和可以控制的毒副作用,是晚期非小细胞肺癌安全、有效的治疗手段。

能谱CT早期评价^125Ⅰ粒子植入治疗胰腺癌效果实验研究

目的探讨能谱CT成像早期评价^(125)Ⅰ粒子组织间植入治疗胰腺癌效果的应用价值。方法人原位胰腺癌Bx PC-3细胞株接种于16只BABL/c裸鼠四肢偏背侧皮下,成瘤1~1.5 cm;分别植入^(125)Ⅰ粒子(实验组,n=8)和空载粒子(对照组,n=8),2周后行能谱CT平扫及多期相(10 s、25 s、60 s)增强扫描,获取多期相系列图像。测量瘤体对比噪声比(CNR)和碘浓度(IC),得出瘤体标准化碘浓度(n IC)。瘤体免疫组化染色后,分析瘤体组织内微血管密度(MVD),n IC与MVD相关性。结果实验组各期相(10 s、25 s、60 s)瘤体n IC值均低于对照组,差异有统计学意义(P<0.05);实验组MVD计数低于对照组,差异有统计学意义(t=5.957,P<0.01);各期相n IC与MVD均存在正线性相关(分别为r=0.63,P<0.0001;r=0.51,P=0.002;r=0.48,P=0.0017)。结论能谱CT是监测^(125)Ⅰ粒子组织间植入治疗胰腺癌效果的有效方法 。

CT导向下^(125)Ⅰ粒子植入治疗晚期头颈肿瘤的近期疗效

目的:评价CT导向下^(125)Ⅰ放射性粒子植入治疗晚期头颈肿瘤的临床价值。方法:回顾分析2007年10月-2008年8月接受CT导向下^(125)Ⅰ放射性粒子植入治疗的10例晚期头颈癌患者的临床资料。采用计算机立体计划系统计算布源,在CT导向下^(125)Ⅰ粒子平面插植。手术结束后1-3个月复查CT。结果:10例患者中8例术后5-14天疼痛缓解,有效率80%,2例无效。10例患者局部肿瘤完全缓解8例(80%),部分缓解1例,无效1例。无明显并发症发生。结论:^(125)Ⅰ粒子植入治疗晚期头颈肿瘤近期疗效好,安全性高,创伤小,并发症发生率低。

术中^(125)Ⅰ粒子永久性组织间植入治疗消化系统恶性肿瘤

目的 探讨1 2 5Ⅰ放射粒子术中组织间植入治疗消化系统恶性肿瘤的临床效果。方法 术中将1 2 5Ⅰ粒子植入肿瘤切除后可能残留区域或不能切除的肿瘤组织内 ,治疗 10例消化系统恶性肿瘤病人。结果 10例手术后均恢复顺利 ,未因植入1 2 5Ⅰ粒子而导致严重并发症 ,中位随访期 9个月 ,肿瘤切除者 5例均存活 ,未切除者症状改善 ,存活期延长。结论 术中1 2 5Ⅰ粒子组织间植入治疗消化系统恶性肿瘤方法简便 ,近期疗效确切 ,能缓解癌性疼痛等症状 。