• 제목/요약/키워드: Radiofrequency ablation therapy

검색결과 34건 처리시간 0.03초

개에서 비강내 종양 27 증례 (Intranasal tumor in 27 dogs)

  • 권영삼;장광호;장인호
    • 한국임상수의학회지
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    • 제19권3호
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    • pp.383-386
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    • 2002
  • Intranasal tumors were diagnosed in 21 dogs for 5 years. Sneezing, nasal discharge, nasal bleeding were the most common clinical signs. Diagnosis was performed by blood test, histological examination, radiography, and computed tomography. Among the 27 nasal tumors, adenocarcinornas, squamous cell carcinomas, and chondrosarcomas were relatively common. Breeds with nasal tumor were shetland sheepdog, mongrel, and shiba. The dogs were treated by surgical resection, radiotherapy, chemotherapy, cryosurgery, and radiofrequency ablation. Each therapy alone was not effective, but the combination of two or more therapies had good effects on progression of tumor and made the survival time extended.

Transarterial Chemoembolization Monotherapy in Combination with Radiofrequency Ablation or Percutaneous Ethanol Injection for Hepatocellular Carcinoma

  • Xu, Chuan;Lv, Peng-Hua;Huang, Xin-En;Wang, Shu-Xiang;Sun, Ling;Wang, Fu-An
    • Asian Pacific Journal of Cancer Prevention
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    • 제17권9호
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    • pp.4349-4352
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    • 2016
  • Purpose: To evaluate whether combined transarterial chemoembolization (TACE) with radiofrequency ablation (RFA) or percutaneous ethanol injection (PEI) for hepatocellular carcinoma (HCC) have superior efficacy to transarterial chemoembolization (TACE) alone a retrospective review was conducted. Methods: During January 2009 to March 2013, 108 patients with hepatocellular carcinoma underwent TACE or combined therapies (TACE+RFA or TACE+PEI). The long-term survival rates were evaluated in those patients by various statistical analyses. Results: The cumulative survival rates in the combined TACE+RFA/PEI group were significantly superior to those in the TACE alone group. When the comparison among the groups was restricted to patients with two or three tumors fulfilling the Milan criteria, significantly greater prolongation of survival was observed in the combined TACE+ RFA/PEI group than in the RFA/PEI alone group. Conclusions: In terms of the effect on the survival period, combined TACE+ RFA/PEI therapy was more effective than TACE monotherapy, and also more effective than PEI or RFA monotherapy in cases with multiple tumors.

신장 종양 고주파 절제술 이후 신장 기능 저하의 위험요소 (Risk Factors for Renal Function Impairment Following Radiofrequency Ablation of Renal Tumors)

  • 박일철;윤성국;김동원
    • 대한영상의학회지
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    • 제83권2호
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    • pp.317-330
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    • 2022
  • 목적 본 연구는 신장종양 환자에서 시행한 고주파절제술 이후 신장 기능에 영향을 미치는 다양한 요소들에 대한 평가를 통해서 이들의 상관관계와 임상적 가치를 평가하기 위한 것이다. 대상과 방법 2010년 1월부터 2018년 12월까지 본원에서 ultrasonography, CT 유도하에 고주파절제술을 시행 받은 91명을 대상으로 선정하였다. 신기능을 평가하는 방법으로 시술 직전과 시술 이후 혈청 크레아티닌, 사구체 여과율을 측정하였다. 시술 전과 비교하여 혈청 크레아티닌 수치가 0.3 mg/dL 이상 증가하는 것을 유의미한 것으로 정하고, 이에 근거하여 두 그룹으로 분류하였다. 신장 기능 손상에 영향을 미치는 요소를 평가하기 위해서 다변수 로지스틱 회귀분석을 이용해서 그룹 간에 비교를 시행하였다. 결과 단일 신장, 3단계 이상의 만성 콩팥병, 요관 손상은 신장 기능 손상에서 통계적으로 유의한 의미가 있었다. 성별, 연령, 다른 암, 종양 크기, 위치, 성장 형태, 집합계와의 근접성 등은 통계적으로 유의하지 않았다. 신장 기능 수치의 시간에 따른 변화는 단일 신장, 3단계 이상의 만성 콩팥병, 요관 손상 유무에 따라서 통계적으로 유의하게 달랐다. 결론 고주파절제술 시행 전의 의학적 상태 중 단일 신장, 3단계 이상의 만성 콩팥병, 시술 이후 발생한 합병증 중 요관 손상은 시술 이후 발생하는 신장 기능 손상의 위험요소로 생각할 수 있다.

Cryotherapy versus radiofrequency ablation in the treatment of dysplastic Barrett's esophagus with or without early esophageal neoplasia: a systematic review and meta-analysis

  • Igor Logetto Caetite Gomes;Diogo Turiani Hourneaux de Moura;Igor Braga Ribeiro;Sergio Barbosa Marques;Alexandre de Sousa Carlos;Beanie Conceicao Medeiros Nunes;Bruno Salomao Hirsch;Guilherme Henrique Peixoto de Oliveira;Roberto Paolo Trasolini;Wanderley Marques Bernardo;Eduardo Guimaraes Hourneaux de Moura
    • Clinical Endoscopy
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    • 제57권2호
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    • pp.181-190
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    • 2024
  • Background/Aims: Radiofrequency ablation (RFA) is the first-line therapy for dysplastic Barrett's esophagus (BE). Therefore, cryotherapy has emerged as an alternative treatment option. This study aimed to compare the efficacies of these two techniques based on the rates of complete eradication of intestinal metaplasia (CE-IM) and dysplasia (CE-D). Adverse events and recurrence have also been reported. Methods: An electronic search was conducted using the Medline (PubMed), Embase, LILACS, and Google Scholar databases until December 2022. Studies were included comparing cryotherapy and RFA for treating dysplastic BE with or without early esophageal neoplasia. This study was performed in accordance with the Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines. Results: Three retrospective cohort studies involving 627 patients were included. Of these, 399 patients underwent RFA, and 228 were treated with cryotherapy. There was no difference in CE-IM (risk difference [RD], -0.03; 95% confidence interval [CI], -0.25 to 0.19; p=0.78; I2=86%) as well as in CE-D (RD, -0.03; 95% CI, -0.15 to 0.09; p=0.64; I2=70%) between the groups. The absolute number of adverse events was low, and there was no difference in the recurrence rate. Conclusions: Cryotherapy and RFA were equally effective in treating dysplastic BE, with or without early esophageal neoplasia.

혈관 내 고주파열치료법인 7 Fr. VNUS $ClosureFAST^{(R)}$ System을 이용한 하지 정맥류 치료의 조기 결과 (The Early Results of Endovenous Radiofrequency Ablation Using the 7 Fr. VNUS $ClosureFAST^{(R)}$ System in Varicose Veins)

  • 류상우;오혜령;김미경;문승호;제갈재기;윤주식;홍성범
    • Journal of Chest Surgery
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    • 제42권2호
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    • pp.238-243
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    • 2009
  • 배경: 하지 정맥류의 치료에 있어 최소 침습 술기의 발달로 고주파 열폐쇄술이나 혈관 내 레이저)를 이용한 수술이 시행되고 있다. 빠른 시간 내에 효과적으로 혈관을 폐쇄시킬 수 있는 7 Fr. VNUS $ClosureFAST^{(R)}$ 고주파 열폐쇄 System이 국내에 소개되었으며, 본 연구는 이 시스템을 이용한 하지정맥류 치료의 조기 결과를 알아보고자 시행되었다. 대상 및 방법: 2007년 5월 2일부터 2008년 5월 31일까지 고주파 열폐쇄술을 이용하여 수술을 받은 90예의 환자를 대상으로 본 연구를 시행하였다. 남자가 67명(74.4%)이었고 환자들의 평균 연령은 $57.9{\pm}11.0\;(23{\sim}78)$세였다. 수술 후 3주와 이후 3개월 간격으로 혈관 초음파와 임상 양상을 분석하였다. 결과: 수술 후 합병증은 반상 출혈(85예, 94.4%)이 가장 많았으며, 통증을 호소하는 경우가 27.8%, 감각 이상 25.6%, 수포 형성 8.9%, 부종 6.7%, 정맥염 2.2% 등이었다. 술후 3주에 시행한 초음파에서 정맥의 역류나 부분적 혈류 재개가 있었던 환자는 1예로, 치료 성공률은 98.9%였다. 3개월 후 초음파 검사상 혈류 재개가 1예에서 더 관찰되었으며, 이후 3개월 간격으로 시행한 혈관 초음파상 혈류 재개가 관찰되었던 환자는 없었으며, 1년 치료 성공률은 97.6%를 보였다. 혈류 재개를 보였던 2예의 환자는 계속 외래 추적 관찰 중이며, 현재까지는 수술 전 보였던 하지 부종이나 저림 등의 증상을 호소하지 않고 있다. 결론: 저자들은 국내에 처음으로 도입된 7 Fr. VNUS $ClosureFAST^{(R)}$ System을 이용하여 하지 정맥류 수술을 효과적으로 시행하였으며, 고위 결찰이나 기존의 고주파 열폐쇄술, 그리고 혈관내 레이저 치료와 장기적인 비교 분석이 필요할 것으로 사료된다.

Synthesis of Gold Nanoparticles by Electro-reduction Method and Their Application as an Electro-hyperthermia System

  • Yoon, Young Il;Kim, Kwang-Soo;Kwon, Yong-Soo;Cho, Hee-Sang;Lee, Hak Jong;Yoon, Chang-Jin;Yoon, Tae-Jong
    • Bulletin of the Korean Chemical Society
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    • 제35권6호
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    • pp.1806-1808
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    • 2014
  • We report the successful preparation of gold nanoparticles (Au NPs) using a novel electroreduction process, which is simple, fast, and environmentally friendly (toxic chemicals such as strong reducing agents are not required). Our process allows for the mass production of Au NPs and adequate particle size control. The Au NPs prepared show high biocompatibility and are non-toxic to healthy human cells. By applying radio-frequency (RF) ablation, we monitored the electro-hyperthermia effect of the Au NPs at different RFs. The Au NPs exhibit a fast increase in temperature to $55^{\circ}C$ within 5 min during the application of an RF of 13 MHz. This temperature rise is sufficient to promote apoptosis through thermal stress. Our work suggests that the selective Au NP-mediated electro-hyperthermia therapy for tumor cells under an RF of 13 MHz has great potential as a clinical treatment for specific tumor ablation.

항암화학요법과 수술을 통해 완전 관해를 획득한 진행성 십이지장 유두암 증례 (A Case of Metastatic Ampulla of Vater Cancer Treated with Chemotherapy Followed by Pylorus Preserving Pancreaticoduodenectomy)

  • 윤해룡;정문재;방승민;박승우;송시영
    • Journal of Digestive Cancer Research
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    • 제2권2호
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    • pp.75-77
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    • 2014
  • 전이성 십이지장 유두암에서 정립된 치료 지침은 아직 없다. 본 증례에서 간 전이 및 국소 림프절 전이가 있는 십이지장 유두암에 대해 단계적 치료를 시행하였다. 원발 부위 종양의 크기를 감소시키고 전이성 병변에 대한 치료를 위해 gemcitabine과 cisplatin 병합 항암화학요법을 시행하였다. 항암화학요법 후 시행한 반응 평가 상에서 원발 병소의 크기가 감소되었고, 추가적으로 전이성 병변이 발생하지 않았음을 확인하고, 내시경적 유두부 절제술로 원발 부위를 국소적으로 제거하였다. 진단 후 12개월 동안 항암화학요법 치료를 시행하였으며, 이 기간 동안 영상학적으로 완전 관해를 유지할 수 있었다. 이후 PPPD 및 Intraoperative RFA를 시행하였으며, 수술 후 병리 소견 상 11개의 국소 림프절 중 1개에서 암세포가 발견되었으나, 원발 부위에서 암은 발견되지 않았다. 환자는 수술 후 7개월째 재발 소견 없이 외래 추적 관찰 중이다. 본 증례의 경우 항암화학요법과 내시경적 유두부 절제술, 그리고 PPPD 및 intraoperative RFA를 통하여 완전 관해를 유도할 수 있었다. 이런 단계적 접근법이 전이성, 국소 진행성 십이지장 유두암에서 생존율 향상을 유도할 수 있을 것으로 사료되어, 이를 증례 보고한다.

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Diagnosis and Therapy of Primary Hepatic Neuroendocrine Carcinoma: Clinical Analysis of 10 Cases

  • Wang, Li-Ming;An, Song-Lin;Wu, Jian-Xiong
    • Asian Pacific Journal of Cancer Prevention
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    • 제15권6호
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    • pp.2541-2546
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    • 2014
  • Background: Primary hepatic neuroendocrine carcinoma (PHNEC) is rarer than extrahepatic gastrointestinal neuroendocrine carcinoma (NEC). It is difficult to make a correct diagnosis and poses a challenge for management. Materials and Methods: Ten PHNEC patients were admitted to our hospital from June 2006 to June 2011. Laboratory tests and imaging scans were performed for diagnosis and exclusion of extrahepatic NEC. All patients were AFP - and CA199-. Seven patients had solid tumors with cystic changes on ultrasonography, CT and/or MRI. For the initial treatment, four patients received combined-therapy and six monotherapy. Considering overall treatment, six patients received combined-therapy and four patients monotherapy. Staging criteria of primary hepatocellular carcinoma (PHC, AJCC 7th edition) were used to differentiate the stage of all patients: 3 patients were stage I, 2 stageII, 4 patients stageIII and 1 stageIV. All patients were followed up and clinical data were gathered. Results: The median follow-up duration was 38.5 months. The 1-year, 2-year, 3-year and 6-year disease-free survival was 80.0%, 46.2% and 46.2% and 0% respectively. The overall survival rates were 100%, 67.1%, 67.1% and 33.6% respectively. Patients in early-stages (I/II) had similar disease-free and overall survival as those in advanced-stages (III/IV). Patients with monotherapy had significant shorter disease-free and overall survival than the patients with combination-therapy. Conclusions: PHNEC has a unique specificity during its occurrence and development. The staging criteria of PHC might not be suitable for the PHENT. More convenient and effective features need to be found in imaging and laboratory detection. Surgical resection, TACE, chemotherapy and radiofrequency ablation should be performed in combination and actively for patients with PHNEC or recurrence to get the best effectiveness; they might extend the disease-free and overall survival.

Chronic postsurgical pain: current evidence for prevention and management

  • Thapa, Parineeta;Euasobhon, Pramote
    • The Korean Journal of Pain
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    • 제31권3호
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    • pp.155-173
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    • 2018
  • Chronic postsurgical pain (CPSP) is an unwanted adverse event in any operation. It leads to functional limitations and psychological trauma for patients, and leaves the operative team with feelings of failure and humiliation. Therefore, it is crucial that preventive strategies for CPSP are considered in high-risk operations. Various techniques have been implemented to reduce the risk with variable success. Identifying the risk factors for each patient and applying a timely preventive strategy may help patients avoid the distress of chronic pain. The preventive strategies include modification of the surgical technique, good pain control throughout the perioperative period, and preoperative psychological intervention focusing on the psychosocial and cognitive risk factors. Appropriate management of CPSP patients is also necessary to reduce their suffering. CPSP usually has a neuropathic pain component; therefore, the current recommendations are based on data on chronic neuropathic pain. Hence, voltage-dependent calcium channel antagonists, antidepressants, topical lidocaine and topical capsaicin are the main pharmacological treatments. Paracetamol, NSAIDs and weak opioids can be used according to symptom severity, but strong opioids should be used with great caution and are not recommended. Other drugs that may be helpful are ketamine, clonidine, and intravenous lidocaine infusion. For patients with failed pharmacological treatment, consideration should be given to pain interventions; examples include transcutaneous electrical nerve stimulation, botulinum toxin injections, pulsed radiofrequency, nerve blocks, nerve ablation, neuromodulation and surgical management. Physical therapy, cognitive behavioral therapy and lifestyle modifications are also useful for relieving the pain and distress experienced by CPSP patients.

췌장 양성 종양의 내시경적 치료 (Endoscopic Therapy for Pancreatic Benign Neoplasms)

  • 황준성;고성우
    • Journal of Digestive Cancer Research
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    • 제9권1호
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    • pp.25-32
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    • 2021
  • 내시경초음파가 1980년대에 개발된 이후, 내시경초음파는 췌장 종양 관리에 있어서 진단적인 역할뿐만 아니라 치료적인 역할로 그 기능이 확대되고 있다. 췌장 양성 종양에 대한 전통적인 치료방법은 수술적 절제를 시행하거나 주기적인 경과관찰을 하는 것이었다. 그러나 내시경초음파는 그 대안으로 췌장 양성 종양을 가진 환자에게 최소 침습적인 치료법을 제공한다. 본고에서는 췌장 양성 종양치료에 있어서 내시경초음파의 역할에 대해 알아보고자 한다.