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.

DTI and pathological changes in a rabbit model of radiation injury to the spinal cord after ^(125)I radioactive seed implantation

Excessive radiation exposure may lead to edema of the spinal cord and deterioration of the nervous system. Magnetic resonance imaging can be used to judge and assess the extent of edema and to evaluate pathological changes and thus may be used for the evaluation of spinal cord injuries caused by radiation therapy. Radioactive ^125I seeds to irradiate 90% of the spinal cord tissue at doses of 40–100 Gy （D90） were implanted in rabbits at T10 to induce radiation injury, and we evaluated their safety for use in the spinal cord. Diffusion tensor imaging showed that with increased D90, the apparent diffusion coefficient and fractional anisotropy values were increased. Moreover, pathological damage of neurons and microvessels in the gray matter and white matter was aggravated. At 2 months after implantation, obvious pathological injury was visible in the spinal cords of each group. Magnetic resonance diffusion tensor imaging revealed the radiation injury to the spinal cord, and we quantified the degree of spinal cord injury through apparent diffusion coefficient and fractional anisotropy.

Dosimetry for ^(125) I radioactive seed implantation therapy for hepatocellular carcinoma

Hepatocellular carcinoma （HCC） is an aggressive malignancy. Early lesions respond well to hepatic resection or liver transplantation. However, only a few of HCC patients are suitable for surgical intervention. External beam radiation and chemotherapy is poorly efficacious. In the last 20 years, HCCs belonging to the radiosensitive tumor group has been confirmed. Along with the development of new radiotherapy technology and facilities, the research about brachytherapy（especially ^125I seed implantation therapy） has provoked more interests in the world. Radioactive seed implantation therapy is a form of interstitial brachytherapy, with the property of local ＂conformal radiotherapy＂ and the advantages of minimal invasion, convenience, high performance, and minimal adverse effects. It is a promising therapy for HCC, however the dosimetry hasn＇ t yet been identified and lacks verification in prospective research. This report aims to further explore the best prescription dose and radioactivity for ^125I interstitial implantation brachytherapy for HCC.

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.

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.

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.

Primary research on neoplasm needle track implantation metastasis after radioactive seeds implantation and preventive measures

Objective:To observe the possibility of neoplasm needle track implantation after radioactive seeds implantation and seek preventive measures to avoid it.Methods:Superficial tissue of 250 seeding needle cores and 250 stylophores employed in neoplasm radioactive seeds implantation was smeared on slides to search for tumor cells.All patients received chemotherapy or endocrine therapy after operations.Ultrasound B-mode or computer tomography(CT)was performed at 10th day,30th day,60th day,and 180th day post operation to detect neoplasm implantation metastasis through needle tracks. Results:Positive cells were found on 13 of 250(5.20%)cores,and 7 of 250(2.80%)stylophores.The difference was not sta- tistically significant(P>0.05).The positive cells frequency of needles those traversed distance less than 3 cm in normal tissue was 6.19%(13/210),while the frequency of the others those traversed longer distance in normal tissue was 2.41%(7/290). The positive cells frequency of needles traversing different distances in normal tissues is significantly different(P<0.05).No neoplasm was detected through needle tracks by ultrasound B-mode or CT in 180 days after operation.Conclusion:Tumor cells could ablate into the needle track during radioactive seed implantation.Some preventive measures,such as optimization of pre-operation and intra-operation treatment plan,chemotherapy or endocrine therapy after operation,may be beneficial to avoid the implantation metastasis of neoplasm in seeding needle tracks.

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.

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.

^(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。

^(125)I放射性粒子植入治疗对老年非小细胞肺癌患者癌性疼痛的影响

目的探讨^(125)I放射性粒子植入治疗对老年非小细胞肺癌患者癌性疼痛的影响。方法将110例老年非小细胞肺癌患者根据治疗方式的不同分为化疗组(n=54)和粒子植入组(n=56)。化疗组患者采取紫杉醇+顺铂化疗方案,粒子植入组患者在化疗组的基础上采取^(125)I放射性粒子植入治疗。比较两组患者的临床疗效、疼痛程度[视觉模拟评分法(VAS)]、衰弱情况[Fried衰弱表型量表(FFP)]、肺功能指标[用力肺活量(FVC)、第1秒用力呼气容积(FEV1)、FEV1/FVC]及不良反应发生情况。结果粒子植入组患者总有效率高于化疗组,差异有统计学意义(P﹤0.05)。治疗后,两组患者VAS、FFP评分均较治疗前降低,FVC、FEV1及FEV1/FVC均较治疗前升高,且粒子植入组患者VAS、FFP评分均低于化疗组,FVC、FEV1及FEV1/FVC均高于化疗组,差异均有统计学意义(P﹤0.05)。两组患者不良反应总发生率比较,差异无统计学意义(P﹥0.05)。结论^(125)I放射性粒子植入治疗老年非小细胞肺癌患者,可以扭转衰弱,抑制癌性疼痛,提高肺功能,且较为安全,疗效确切。

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。

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。

CT guided ^125iodine seed implantation for portal vein tumor thrombus in primary hepatocellular carcinoma

Background This study evaluated the clinical application of CT guided ^125iodine implantation in patients with portal vein tumor thrombus in primary hepatocellular carcinoma. Methods The ten patients （9 males and 1 female, aged from 36 to 72 years） with portal vein tumor thrombus accompanying hepatocellular carcinoma had been treated with comprehensive therapy including surgery, transcatheter arterial chemoembolization, radiotherapy ablation, microwave ablation or percutaneous ethanol injection. The average diameter of each tumor thrombus was 21.5 mm × 30.5 mm. Seeds of 30 MBq ^125I were implanted 5 mm apart within the portal vein tumor thrombus. The follow-up after 4 months included enhanced spiral CT. Results CT screening of the tumours indicated that 4 out of 10 patients showed complete response to the therapy, 5 partial response and 1 stable disease. Adverse effects included aggravated abdominal dropsy and temporarily increased transaminase, which were controlled by medical management. Severe complications such as haemorrhage, biliary fistula hepatic abscess, pancreatic fistula and hepatic function failure were not observed. Implanted seeds migrated to lung and left hepatic lobe in 1 case. Conclusion CT guided implantation of ^125iodine seeds, can effectively treat portal vein tumor thrombus accompanying hepatocellular carcinoma with minimal damage and few complications.

^(125)I粒子永久性植入组织间放射治疗肝癌

目的 :探讨12 5I组织间放射治疗肝癌的疗效。方法 :选择肝癌患者 84例 ,随机分为对照组 (A组 )与治疗组 (B组 ) ,A组 4 2例行手术治疗 (根治手术或姑息手术 )和化疗 ;B组 4 2例 ,除施行A组的治疗方案外 ,另行术中永久植入12 5I粒子。结果 :术前、术后 1w及 3个月内血象虽有显著差异 ,但均在正常范围内 ,免疫指标前后变化无统计学意义。A组 :12个月、2 4个月、36个月局部复发率分别为 4 1.7%、5 0 .0 %和 5 9.5 % ;12个月、2 4个月、36个月局部生存率分别为 81.3%、6 3.4 %和 4 7.6 %。B组 :12个月、2 4个月、36个月局部复发率分别为 0、6 .7%和 11.9% ;生存率分别为 94 .7%、87.5 %和 78.4 % ,两组的局部复发率及生存率有显著性差异 (P <0 .0 5 )。结论 :12 5I组织间放射治疗肝癌方法简单、安全 ,近期疗效确切 ,是治疗癌症的理想方法之一。

经皮穿刺^(125)I粒子植入治疗胃肠道来源肺转移瘤的短期疗效观察

目的评价胃肠道来源肺转移瘤CT导向下125I粒子植入治疗的短期疗效。方法20例胃肠道来源肺转移瘤患者,肺内病灶5个以下,总计病灶数56个,平均每例2.8个病灶,病灶平均直径2.1cm(0.5～3cm)。其中单肺转移13例,双肺7例。原发病灶均有病理诊断,肺转移均经CT或MRI检查后临床诊断。利用计算机三维立体定向治疗计划系统(TPS)计算布源,在CT引导下将125I粒子植入肺转移病灶内。观察治疗后2个月病灶变化。结果20例56个病灶,完全缓解(CR)32个;部分缓解(PR)19个;无变化(NC)5个。总有效率91.1%。2个月内无死亡病例。发生气胸2例,咯血痰2例,胸腔出血1例,均经对症治疗后好转。结论胃肠道来源肺转移瘤,肺内病灶5个以下,最大直径不超过3cm,CT导向下125I粒子植入治疗,创伤小,并发症发生率低,近期效果好。

^125I放射性粒子食管支架置入治疗食管癌伴吞咽困难患者的护理

目的探讨125I放射性粒子食管支架置入治疗食管癌的护理。方法对21例晚期食管癌患者实施125I放射性粒子食管支架置入。术前、术中、术后给予护理干预,记录与治疗相关并发症的发生及护理情况,对护理效果进行总结分析。结果 21例食管癌患者顺利置入125I放射性粒子食管支架,术后患者吞咽梗阻症状得到有效缓解,进食情况明显改善。支架置入4 h后,在护理人员的指导下进流食,吞咽顺畅,其中4例感胸痛,2例有少量出血,2例有异物感。结论 125I放射性粒子食管支架置入治疗食管癌是一项新的技术,术前、术中、术后等环节的正确护理,能有效降低相关并发症的发生。