Hepatocellular carcinoma: pilot trial of treatment with Y-90 microspheres

The potential use of yttrium-90 glass microspheres in the treatment of hepatocellular carcinoma was assessed in a pilot study of seven patients. The Y-90 microspheres were injected via a hepatic artery catheter. In this group of patients, no toxicity was observed for absorbed doses of between 5,000 and 10,000 cGy to the liver and up to 32,000 cGy to the tumor itself. Tumor response was seen only at the higher absorbed doses. The new Y-90 glass microspheres can safely deliver large doses of internal radiation to hepatic tumors as long as extrahepatic shunting can be excluded. Extrahepatic shunting will be the main limitation to this form of radiation therapy.     

Radioembolization with Yttrium-90 resin microspheres in treatment of HCC with or without PVT: Initial Egyptian experience

Background/Aim

Hepatocellular carcinoma (HCC) is the most common primary malignancy of the liver. Radioembolization with yttrium-90 (Y-90) microspheres is a new concept in radiation therapy for HCC. The aim of this study is to evaluate efficacy, side effects, and future direction of Y-90 therapy, using TheraSphere®, in patients with HCC with or without PVT.

Patients and methods

Forty patients were presented by hepatocellular carcinoma most of them with portal vein thrombosis and were treated with Y-90 resin microspheres (SIR-TeX®).

Results

At one month after treatment the overall response (complete or partial response) was exhibited by 9% of patients, stable disease exhibited by 80% of patients, progressive disease seen in 11% of patients.

Conclusion

Radioembolization with Y-90 resin microspheres offers a favorable risk/benefit profile for patients presenting with locally advanced unresectable HCC with or without PVT and good liver function.     

Evaluating the Effectiveness of Yttrium-90 Glass Microspheres in the Treatment of Hepatocellular Carcinoma,Intrahepatic Cholangiocarcinoma,and Metastatic Colorectal Cancer in Practice: Protocol for the Prospective PROACTIF Phase IV Registry Study in France

Primary Objective

Recently, selective internal radiation therapy using yttrium-90 (Y90) glass microspheres (TheraSphere™) was approved for reimbursement by health authorities in France. The PROACTIF study aims to gather data on effectiveness, patient quality of life, and safety with use of Y90 glass microspheres in real-world clinical settings in France.

Inclusion Criteria

Patient with a diagnosis of hepatocellular carcinoma (HCC), intrahepatic cholangiocarcinoma (iCC), and/or metastatic colorectal cancer (mCRC) who was treated with a dose of Y90 glass microspheres that has been reimbursed in France and who do not oppose use of their personal medical data.

Exclusion Criteria

If data collection is opposed, treatment is reimbursed but not administered, or treatment is administered but not reimbursed.

Outcome Measures

Primary outcome measures include overall survival from time of Y90 glass microsphere treatment and quality of life, as assessed using the Functional Assessment of Cancer Therapy- Hepatobiliary questionnaire.

Estimated Number of Patients to Be Included

This is an open study and there is no set number of patients; 115 have already been enrolled.

Planned Subgroup Analyses

Analyses will be stratified by disease state (HCC, iCC, or mCRC). Subgroups to be analyzed include age group, unilobar/bilobar disease at baseline, Eastern Cooperative Oncology Group (ECOG) status at baseline, liver tumor burden at baseline, target lesion size, and standard versus multi-compartment personalized dosimetry treatment.

Planned Recruitment and Observation Period

Recruitment includes patients who are prescribed and treated with a commercial vial of Y90 glass microspheres between 01 January 2019 and 31 December 2024.

Trial registration

ClinicalTrials.gov Identifier: NCT04069468.

     

Entwicklungen und Perspektiven radioablativer Verfahren

The encouraging preliminary results of radioembolization therapy in hepatocellular carcinoma and liver metastases from colorectal cancer have suggested that this mode of therapy could also be successful in breast and neuroendocrine metastases from colorectal cancer. (90)Yttrium microspheres in combination with radiosensitizing agents and growth factor inhibitors present opportunities to evaluate its application in combinatorial treatment paradigms with modern chemotherapy regimens. Other randomized trials are needed in hepatocellular carcinoma, to compare radioembolization with (90)yttrium against transarterial chemoembolization, bland embolization, drug-eluting beads, and best supportive care. A further potential research area besides the application of radioembolization for extrahepatic tumors is the determination of quality of life in randomized studies comparing radioembolization with systemic chemotherapy regimens with or without percutaneous radiation therapies.     

Radiation dose limits and liver toxicities resulting from multiple yttrium-90 radioembolization treatments for hepatocellular carcinoma

PURPOSE: To assess the relationship between cumulative hepatic lobar radiation dose and liver toxicities in patients with hepatocellular carcinoma (HCC) treated with multiple sessions of yttrium-90 radioembolization. MATERIALS AND METHODS: Forty-one patients with HCC (age range, 46-82 years) underwent radioembolization with 90Y. Patients were classified according to the Okuda scoring system. All patients received single liver lobar treatments on two or more occasions according to standard clinical 90Y embolization protocol. Cumulative radiation dose to each liver lobe was measured and patients were followed to assess liver toxicities. Statistical analysis was performed with the Student t test and Kaplan-Meier analysis. RESULTS: Patients with Okuda stage I disease received more treatments than those with Okuda stage II disease (mean, 2.65 vs 2.24; P<.05). For average cumulative radiation dose, patients with Okuda stage I disease received 247 Gy (range, 88-482 Gy) and those with Okuda stage II disease received 198 Gy (range, 51-361 Gy; P<.05). A total of 13 toxicities occurred in seven patients (16%). Patients with Okuda stage I disease were given a greater cumulative dose than patients with Okuda stage II disease before worsening of liver function: 390 Gy versus 196 Gy (P<.005). For patients with Okuda stage I disease, a higher cumulative radiation dose was associated with occurrence of one or more toxicities: 222 Gy (no toxicities) versus 390 Gy (>or=1 toxicity; P<.005). No correlation between cumulative radiation dose and liver toxicities existed in patients with Okuda stage II disease. The maximum tolerated dose was between 222 and 390 Gy. Median survival times were 660 and 431 days for patients with Okuda stage I and stage II disease, respectively. CONCLUSIONS: Patients with HCC can tolerate high cumulative radiation doses with 90Y therapy. Compared with patients with Okuda stage II disease, patients with Okuda stage I disease tolerate a higher cumulative radiation dose without liver toxicity, but liver toxicities increase with increasing cumulative radiation doses.     

Yttrium-90 microsphere radioembolization for the treatment of liver malignancies: a structured meta-analysis

Radioembolization with yttrium-90 microspheres ((90)Y-RE), either glass- or resin-based, is increasingly applied in patients with unresectable liver malignancies. Clinical results are promising but overall response and survival are not yet known. Therefore a meta-analysis on tumor response and survival in patients who underwent (90)Y-RE was conducted. Based on an extensive literature search, six groups were formed. Determinants were cancer type, microsphere type, chemotherapy protocol used, and stage (deployment in first-line or as salvage therapy). For colorectal liver metastases (mCRC), in a salvage setting, response was 79% for (90)Y-RE combined with 5-fluorouracil/leucovorin (5-FU/LV), and 79% when combined with 5-FU/LV/oxaliplatin or 5-FU/LV/irinotecan, and in a first-line setting 91% and 91%, respectively. For hepatocellular carcinoma (HCC), response was 89% for resin microspheres and 78% for glass microspheres. No statistical method is available to assess median survival based on data presented in the literature. In mCRC, (90)Y-RE delivers high response rates, especially if used neoadjuvant to chemotherapy. In HCC, (90)Y-RE with resin microspheres is significantly more effective than (90)Y-RE with glass microspheres. The impact on survival will become known only when the results of phase III studies are published.     

Intra-tumoural injection of 90Y microspheres into an animal model of hepatoma

BACKGROUND: Intrahepatic arterial injection of 90Y glass microspheres (90Y microspheres) is a useful therapeutic modality for inoperative liver tumour. Recently, a new concept of interstitial radiotherapy in the treatment of hepatic malignancies has been carried out with even more encouraging results. However, information regarding this technique is still very rare. The purpose of this study was to analyse the kinetics and biodistribution of 90Y microspheres in rats with hepatic tumours following intra-tumoural injection. METHODS: Twenty male Sprague-Dawley rats with hepatoma were killed at 1 h, 24 h, 48 h and 72 h (five rats each time) after intra-tumoural injection of approximately 7.4 MBq of 90Y microspheres. Samples of various organs were obtained and used to calculate the tissue concentrations and radiation doses. RESULTS: Our data showed that the radioactivity in the tumour was very high throughout this study. The lung was the only organ other than the tumour which showed high radioactivity. The concentrations of radioactivity in other organs, such as normal liver, muscle, spleen, bone, testis, and whole blood were quite low throughout the study. CONCLUSION: Direct intra-tumoural injection of 90Y microspheres is extremely attractive as a clinical therapeutic alternative in hepatoma patients.     

Chemoembolic Hepatopulmonary Shunt Reduction to Allow Safe Yttrium-90 Radioembolization Lobectomy of Hepatocellular Carcinoma

Yttrium-90 (⁹⁰Y) radioembolization represents an emerging transcatheter treatment option for the management of hepatocellular carcinoma (HCC). Elevation of the hepatopulmonary shunt fraction risks nontarget radiation to the lungs and may limit the use of ⁹⁰Y therapy in patients with locally advanced disease with vascular invasion, who often demonstrate increased shunting. We present two cases in which patients with HCC and portal vein invasion resulting in elevated hepatopulmonary shunt fractions underwent chemoembolic shunt closure to allow safe ⁹⁰Y radioembolization. Both patients demonstrated excellent tumor response and patient survival. On this basis, we propose a role for chemoembolic reduction of the lung shunt fraction before ⁹⁰Y radioembolization in patients with extensive tumor-related hepatopulmonary shunting.     

Therapieresponse von Lebertumoren nach selektiver interner Radiotherapie

Selective internal radiation therapy (SIRT) is used for the treatment of patients with liver tumors, especially for those with hepatocellular carcinoma (HCC) or liver metastases from various primary tumors. Currently this innovative treatment concept is recommended when established state-of-the-art treatment regimes have failed and tumor progression is noted or if the treatment has to be abandoned because of intolerable toxic effects. For SIRT small biocompatible microspheres (SIR-Spheres(R)) are labelled with the radioactive isotope 90Yttrium, a pure beta emitter, and are superselectively infused into the hepatic arteries. The microspheres are collected in the precapillary vessels in and surrounding the tumor. The beta radiation of 90Yttrium has an average penetration in tissue of approximately 2.5 mm and results in very high doses of radiation being selectively targeted to metastases providing protection to the surrounding healthy liver tissue. In this paper we review the results of SIRT in patients with hepatic metastases from colorectal cancer, breast cancer, neuroendocrine tumors and primary liver cancer (HCC).     

Comparison of the Adverse Event Profile of TheraSphere® with SIR-Spheres® for the Treatment of Unresectable Hepatocellular Carcinoma: A Systematic Review

To compare the safety profiles of TheraSphere^® (glass) and SIR-Spheres^® (resin) Y90 microspheres for the treatment of hepatocellular carcinoma. A systematic review was conducted using the databases MEDLINE, Embase, and Cochrane Trials Register to identify all relevant studies. Baseline characteristics and adverse events of all grades related to gastrointestinal, hepatobiliary, and respiratory systems were collected along with commonly reported outcomes related to post-embolization syndrome. For all outcomes, data from each study were tabulated for each intervention. Adverse events and patients were summed across studies on TheraSphere^® and SIR-Spheres^®, respectively, and the resulting proportion of patients experiencing an outcome for both interventions was calculated. Thirty-one observational studies were included in the review. In the adverse events of all grades, more patients treated with resin microspheres reported gastric ulcers, hepatic encephalopathy, cholecystitis, hepatic failure, and pleural effusion. Patients treated with resin microspheres also had more hepatobiliary adverse events of grade 3 or higher. In the events related to post-embolization syndrome, glass microspheres exhibited a similar safety profile compared to resin microspheres. Ascites and nausea grade 3 or higher were recorded more frequently with glass microsphere treatment. Based on this review of the published literature, glass microspheres exhibit a safety profile with fewer gastrointestinal and pulmonary adverse events compared to resin microspheres in the treatment of hepatocellular carcinoma.

     

钇-90微球的特性、放射栓塞的操作技术及安全防护——钇-90微球放射栓塞系列回顾(一)

钇-90(90Y)微球放射栓塞是一种局部治疗方法,它将载有发射β射线的90Y树脂或玻璃微球选择性地注射到肝动脉.90Y微球随血流被阻塞在肿瘤血管床,其发出的射线对靶肿瘤具有细胞毒性作用.该方法的安全性和有效性已经在不可切除的肝脏恶性肿瘤患者中得到证实.本文作为90Y微球放射栓塞系列综述的第一部分,将讨论90Y和90Y微球的基本特性,90Y微球放射栓塞的基本操作方法,以及放射性安全与防护.     

Yttrium-90 Radioembolization for the Treatment of Unresectable Hepatocellular Carcinoma in Patients with Transjugular Intrahepatic Portosystemic Shunts

PurposeTo evaluate the toxicity and response to radioembolization with yttrium-90 (⁹⁰Y) glass microspheres in patients with hepatocellular carcinoma (HCC) and existing transjugular intrahepatic portosystemic shunts (TIPS).Materials and MethodsFor treatment of unresectable HCC, 12 patients with a patent TIPS underwent a total of 21 infusions of ⁹⁰Y. Toxicity within 90 days of treatment was assessed according to the National Cancer Institute Common Terminology Criteria for Adverse Events (CTCAE v4.0). Imaging response within the index lesion was assessed using the World Health Organization (WHO) and European Association for the Study of the Liver (EASL) guidelines. Survival was calculated using the Kaplan-Meier method.ResultsAll patients had a patent TIPS on imaging before treatment. Clinical toxicities included fatigue (83%), encephalopathy (33%), and abdominal pain (25%). Three patients (25%) experienced new grade 3 or 4 bilirubin toxicity. Imaging response was achieved in 50% and 67% of patients according to WHO and EASL criteria. Six patients (50%) went on to liver transplantation. Median survival censored for liver transplantation was 498 days (95% confidence interval [CI],100–800 d), and uncensored median survival was 827 days (95% CI, 250–2,400 d).Conclusions⁹⁰Y radioembolization may be a safe and effective treatment for patients with unresectable HCC and existing TIPS. This minimally embolic therapy may be particularly useful as a bridge to curative liver transplantation.     

Prospective Evaluation of Patients with Early-/Intermediate-stage Hepatocellular Carcinoma with Disease Progression Following Arterial Locoregional Therapy: Candidacy for Systemic Treatment or Clinical Trials

PurposeDuring the course of cancer treatment, patients whose disease progresses despite therapy are offered alternative options. Similarly, patients with hepatocellular carcinoma (HCC) whose disease progresses following arterial locoregional therapies (LRTs) cross over to undergo systemic therapies or participate in clinical trials. Per current guidelines, patients must meet inclusion criteria (most importantly Child–Pugh class A status) to qualify for systemic options. The present study analyzed the candidacy for systemic agents or clinical trials of patients whose disease progresses despite LRTs.Materials and MethodsA total of 245 patients with HCC were treated with LRTs (chemoembolization, n = 123; yttrium-90 [⁹⁰Y] radioembolization, n = 122) as part of a previously published comparative effectiveness study; 96 patients exhibiting disease progression were followed prospectively. Modes of progression (cancer stage, Child–Pugh class) were analyzed to determine candidacy for systemic therapy or clinical trials, as well as assess ultimate treatment(s) received.ResultsAmong the 96 patients with disease progression, 52% and 48% had Child–Pugh class A and class B/C disease, respectively, thereby substantially limiting the latter group’s eligibility for systemic therapy and/or clinical trials. Of those whose disease progressed who had advanced-stage HCC, 63% had Child–Pugh class B/C disease. By size and necrosis criteria, the local disease progression rate was higher with chemoembolization than with ⁹⁰Y radioembolization (P = .006 and P = .016, respectively). Of the 96 patients with disease progression, only 13 (13%) ultimately received systemic agents or entered clinical trials.ConclusionsMost patients with advanced HCC that progresses following LRTs were not candidates for clinical trials or systemic agents. There is a need for future research efforts directed at treatment options or novel trial designs that will permit inclusion of patients with progressive liver disease and suboptimal liver function.     

Sustained safety and efficacy of extended-shelf-life 90Y glass microspheres: long-term follow-up in a 134-patient cohort

Purpose

To validate our initial pilot study and confirm sustained safety and tumor response of extended-shelf-life ⁹⁰Y glass microspheres. We hypothesized that for the same planned tissue dose, the increase in number of glass microspheres (decayed to the second week of their allowable shelf-life) administered for the same absorbed dose would result in better tumor distribution of the microspheres without causing additional adverse events.

Methods

Between June 2007 and January 2010, 134 patients underwent radioembolization with extended-shelf-life ⁹⁰Y glass microspheres; data from 84 new patients were combined with data from our 50-patient pilot study cohort. Baseline and follow-up imaging and laboratory data were obtained 1 and 3 months after therapy and every 3 months thereafter. Clinical and biochemical toxicities were prospectively captured and categorized according to the Common Terminology Criteria. Response in the index lesion was assessed using WHO and EASL guidelines.

Results

The mean delivered radiation dose was 123 Gy to the target liver tissue. The mean increase in number of microspheres with this approach compared to standard ⁹⁰Y glass microsphere dosimetry was 103 %, corresponding to an increase from 3.84 to 7.78 million microspheres. Clinical toxicities included fatigue (89 patients, 66 %), abdominal pain (49 patients, 36.6 %), and nausea/vomiting (25 patients, 18.7 %). Grade 3/4 bilirubin toxicity was seen in three patients (2 %). Two (1 %) of the initial 50-patient cohort showed gastroduodenal ulcers; gastroduodenal ulcers were not seen in any of the subsequent 84 patients. According to WHO and EASL guidelines, response rates were 48 % and 57 %, respectively, and 21 % demonstrated a complete EASL response.

Conclusion

This study showed sustained safety and efficacy of extended-shelf-life ⁹⁰Y glass microspheres in a larger, 134-patient cohort. The increase in number of microspheres administered theoretically resulted in better tumor distribution of the microspheres without an increase in adverse events.     

The effect of catheter-directed CT angiography on yttrium-90 radioembolization treatment of hepatocellular carcinoma

PURPOSE: Yttrium 90 radioembolization is a transcatheter therapy for unresectable hepatocellular carcinoma (HCC) that delivers internal radiation to tumors. In contrast to the usual method of lobar regional delivery, catheter-directed computed tomographic (CT) angiography was investigated as a potentially useful technique to evaluate the administration of segmental 90Y tumor radiation doses superselectively without significantly altering liver function or Child-Pugh classification. MATERIALS AND METHODS: Fourteen patients underwent 90Y therapy for unresectable HCC. After standard angiographic placement of a 3-F microcatheter in a segmental hepatic artery supplying the tumor, each patient underwent CT angiography with use of segmental hepatic artery injection of iodinated contrast agent to confirm segmental perfusion and delineate segmental liver volume. 90Y was later injected into the same segmental artery. Target dose was calculated according to infused 90Y activity and targeted hepatic volume with standard lobar volume (before CT angiography) versus segmental liver volume (after CT angiography). The Wilcoxon signed-rank test (alpha = 0.05) was used to compare the estimated 90Y dose before CT angiography with the actual 90Y dose after CT angiography, as well as changes in serum bilirubin level and Child-Pugh classification as a result of treatment. RESULTS: The mean estimated tumor dose before CT angiography (SD) was 100 Gy +/- 43 (range, 35-169 Gy). The mean actual tumor dose after CT angiography was 348 Gy +/- 204 (range, 105-857 Gy), which was significantly greater (P < .001). The mean bilirubin level before treatment was 1.0 mg/dL +/- 0.97 (range, 0.2-4.0 mg/dL), whereas the mean bilirubin level after treatment was 1.3 mg/dL +/- 0.85 (range, 0.5-3.8 mg/dL). This difference, although statistically significant (P = .03), was not clinically important. Thirteen of 14 patients had no change in Child-Pugh class. CONCLUSION: CT angiography can be used to delineate the blood supply and volume to a targeted hepatic segment, allowing superselective 90Y radioembolization. This approach significantly increases effective 90Y tumor radiation dose without clinically altering liver function or Child-Pugh class.     

Radiation Safety Issues in Y-90 Microsphere Selective Hepatic Radioembolization Therapy: Possible Radiation Exposure from the Patients

Purpose

The purpose of this study was to estimate the possible external radiation dose to other individuals from patients treated with Y-90 resin microspheres for unresectable hepatocellular carcinoma.

Methods

We designed the study prospectively to estimate the possible radiation dose to other individuals from patients who had been treated with Y-90 microspheres for unresectable hepatocellular carcinoma. We estimated the total effective dose equivalent (TEDE) using two methods: ‘theoretical’ TEDEs according to the administered activity and ‘measured’ TEDE based on the ‘measured’ ambient radiation exposure rate. We compared the results from each method to determine when we can release patients from confinement at the earliest time complying with the patient release criteria.

Results

A total of 20 administrations of Y-90 resin microspheres were done in 18 patients. The average administered activity was 1.2 ± 0.77 (0.28–2.97) GBq. The ‘theoretical’ TEDEs were in the range of 0.8–10 μSv. The ‘measured’ TEDEs were in the range of 2.31–185 μSv. The measured TEDEs tend to be higher than the theoretical TEDEs. The values of theoretical and measured TEDE were both far less than 1 mSv, the upper limit at which the licensee can release a patient without any written documents.

Conclusion

The effective dose equivalent caused by the Y-90 microsphere administered patient is very low. It is safe in terms of radiation safety to the other individuals when Y-90 microsphere radioembolization therapy is done with dose less than 3 GBq. Because the measured TEDE tends to be higher than the theoretical TEDE, it is recommended to use ‘measured’ TEDE for determining patient release.     

Tumor-to-Normal Ratio Relationship between Planning Technetium-99 Macroaggregated Albumin and Posttherapy Yttrium-90 Bremsstrahlung SPECT/CT

PurposeTo quantify the relationship of the tumor-to-normal ratio (TNR) attained from the technetium-99m macroaggregated albumin (MAA) and posttreatment yttrium-90 bremsstrahlung (Y90-Brem) single-photon emission computerized tomography (SPECT)/computer tomography (CT) studies in patients with hepatocellular carcinoma (HCC) treated with glass microspheres.Materials and MethodsRetrospectively, a total of 190 consecutive patients with HCC who underwent 204 MAA and Y90-Brem SPECT/CT for glass microsphere Y90 radiation segmentectomy (Y90-RS) or lobar treatment (Y90-RLT) between 2013 and 2018 were included. Semi-automated regions-of-interests were drawn around the targeted tumor and nontumoral liver tissue on the SPECT/CT studies. TNR values from MAA and Y90-Brem SPECT/CT were compared using paired t-tests, Pearson correlation, and median with interquartile ranges (IQR).ResultsThe mean TNR for MAA and Y90-Brem SPECT/CT was 2.96 ± 1.86 (median, 2.64; IQR, 2.50) and 2.29 ± 1.10 (median, 2.06; IQR, 1.05), respectively (P < .0001). The mean Y90-RLT TNR was 2.88 ± 1.67 (median, 2.59; IQR, 0.83) and 2.17 ± 0.89 (median, 1.98; IQR, 0.81) for MAA and Y90-Brem SPECT/CT, respectively (P < .0001). The mean Y90-RS TNR was 3.02 ± 2.01 (median, 2.87; IQR, 3.01) and 2.39 ± 1.25 (median, 2.11; IQR, 1.28) for MAA and Y90-Brem SPECT/CT, respectively (P = .0003). TNR attained from MAA and Y90 SPECT/CT studies showed a moderate correlation in a positive linear fashion for the overall (r = 0.54; P < .001), Y90-RLT (r = 0.66, P < .001), and Y90-RS cohorts (r = 0.48, P < .001).ConclusionsThe TNR attained from Y90-Brem SPECT/CT is often underestimated, positively correlated, and less variable than that attained from MAA SPECT/CT.     

Radioembolization for Treatment of Hepatocellular Carcinoma: Current Evidence and Patterns of Utilization

Primary liver malignancy, of which hepatocellular carcinoma (HCC) is the most common type, is the second most common cause of death due to cancer worldwide. Given the historically poor prognosis of liver cancer, there has been major research on its treatment options, with significant advancements over the last decade. Transarterial radioembolization (TARE) is a locoregional treatment option for HCC that involves transarterial delivery of the β-emitter yttrium-90 via resin or glass microspheres to arterialized tumor vasculature, delivering a tumoricidal dose to the tumor. The recent 2022 update of the Barcelona Clinic Liver Cancer (BCLC) treatment algorithm features a more prominent role for locoregional treatment, including the incorporation of radioembolization for very-early–stage (BCLC-0) and early-stage (BCLC-A) diseases. This review provides a contemporary summary of the evolving role of TARE in treatment of HCC in light of recent and upcoming trials.     

亡羊补牢——论钇-90微球国产化

钇-90(90Y)微球经导管动脉放疗栓塞术(TARE)治疗不可手术切除的原发性和继发性肝癌在欧美,尤其是美国已成为主要局部治疗方法之一.大量研究证实TARE具安全性及有效性,其疗效甚至优于经导管动脉化疗栓塞术(TACE).目前中国大陆暂无临床可应用的90Y微球,但开展这项治疗已势在必行.由于90Y微球产品特殊性,单靠国外进口难以使该治疗得以推广.20世纪90年代国内曾有研制90Y微球的经验,为此应集中力量,多方合作努力,使之能够早日国产化,为广大肝恶性肿瘤患者提供新的治疗选择.     

90钇玻璃微球治疗肝癌的临床研究

探讨＾９０钇玻璃微球治疗肝癌的临床效果。材料与方法,１９９６年８月至１９９８年５月,应用＾９０钇治疗肝癌１７例,采用含有＾９０钇的三明治疗法：首先注入＾９０钇和超注化碘油悬浮液,然后注入三联合化疗药,最后用明胶海绵颗粒栓塞。对其中１２例施行了经皮股动脉药盒导管系统植入,并对操作技术进行了改进。