Radiofrequency Ablation

Source: coloncancer.about.com --- 33 days ago
From the Colon Cancer Forum: My husband was diagnosed with stage 4 colon cancer in November 2006. He underwent surgery to remove the tumor and it was very successful. Unfortunately,... ...

Source: www.ncbi.nlm.nih.gov --- 25 days ago
Related Articles Radiofrequency Ablation is effective treatment for dysplasia in Barrett's esophagus. Gastroenterology. 2008 Jul;135(1):6 Authors: Lang L PMID: 18549813 [PubMed - indexed for MEDLINE] ...

Source: www.ncbi.nlm.nih.gov --- 23 days ago
Related Articles Percutaneous Radiofrequency Ablation-induced perinephric hematoma with acute renal failure in a solitary kidney. J Endourol. 2008 Jul;22(7):1463-5 Authors: Zhao LC, Chan SW, Macejko AM, Lin WW Iatrogenic occurrences (including radiologically guided renal biopsy, shockwave lithotripsy, and minimally invasive ablative procedures) of subcapsular hematoma that lead to acute renal failure are rare but serious. The advancement of minimally invasive procedures has led to an increase in this complication, especially in patients with a solitary kidney. Fortunately, prompt surgical evacuation of the hematoma in these patients allows decompression of the renal parenchyma and recovery of renal function. We report a case of acute renal failure in a patient with a solitary kidney that resulted from a subcapsular hematoma as a complication of Radiofrequency Ablation. PMID: 18690812 [PubMed - in process] ...

Source: www.ncbi.nlm.nih.gov --- 3 days ago
Related Articles High-frequency jet ventilation during Radiofrequency Ablation: a case report. AANA J. 2008 Jun;76(3):209-12 Authors: Perkins PE High-frequency jet ventilation (HFJV) has been used in emergency airway scenarios and various surgical procedures. Although substantial literature is available regarding HFJV in these situations, there is only 1 publication to date concerning its use for cardiac Radiofrequency Ablation procedures. The following case study describes a 49-year-old man undergoing Radiofrequency Ablation in which HFJV was used. This method has been used for these procedures for months in our institution with great success. Its effectiveness is attributed to the lack of significant heart movement as compared with conventional intermittent positive-pressure ventilation, which, in turn, has improved surgical conditions and resulted in decreased procedure times. In this case, a newly introduced in-line circuit filter was used. Impedance to passive exhalation was created after the filter became saturated from the high humidification. This event, its management, and the following discussion on the mechanics of HFJV and its use in Radiofrequency Ablation procedures make this case an educational value to all anesthesia providers. PMID: 18567326 [PubMed - indexed for MEDLINE] ...

Source: www.ncbi.nlm.nih.gov --- 15 days ago
Related Articles Combined transarterial chemoembolization and Radiofrequency Ablation for hepatocellular carcinoma. Nat Clin Pract Oncol. 2008 Aug 19; Authors: Schwartz M, Weintraub J Transarterial chemoembolization (TACE) and Radiofrequency Ablation (RFA) are both efficacious in treating well-selected patients who have hepatocellular carcinoma (HCC). The sequential combination of these two modalities has a sound theoretical basis and raises the probability of complete local response in tumors that are beyond the size at which the likelihood of failure with RFA alone begins to rise. Cheng et al. have found that when limited to patients with well-compensated liver disease, combined TACE and RFA does not seem to dramatically increase the risk of complications beyond the risk levels associated with the individual procedures. The survival benefit demonstrated in this recent article is, however, an artifact of a rigid study design that did not allow rational selection of treatment on the basis of individual patient and tumor characteristics. This study bolsters the evidence that the combination of TACE with RFA enhances local response, strengthening the status of nonsurgical treatment compared with resection for the treatment of early HCC. PMID: 18711426 [PubMed - as supplied by publisher] ...

Source: www.marketwire.com --- 1 day ago
WINSTON-SALEM, NC (MARKET WIRE) A study of patients with kidney cancer has shown that Radiofrequency Ablation, a minimally invasive, kidney-sparing procedure, can be a successful treatment option for patients whose cancer has not spread beyond the kidney, report researchers at Wake Forest Baptist Medical Center. ...

Source: www.or-live.com --- 6 days ago
WINSTON-SALEM, N.C. – Studies of patients with kidney cancer have shown that Radiofrequency Ablation, a minimally invasive, kidney-sparing procedure, can be a successful treatment option for patients whose cancer has not spread beyond the kidney. The treatment uses computed tomography for guidance during percutaneous placement of a needle-shaped electrode into the tumor. Radiofrequency current is then passed through the electrode to heat the tumor tissue and ablate – or eliminate – it. In the majority of patients complete tumor Ablation can be achieved after a single treatment; others achieved complete tumor Ablation after two or more treatments, with no long-term or serious complications. "This is significant and encouraging because the incidence of kidney cancer in the United States has increased by 126 percent over the past 50 years," said Ronald J. Zagoria, professor of Radiologic Sciences at Wake Forest Baptist and a nationally-recognized expert on Radiofrequency Ablation. For the past 50 years, the standard of care for kidney cancer has been radical nephrectomy – removal of the kidney. More recently, partial nephrectomy has been shown to have equivalent results for curing small low-stage renal cancers, indicating that kidney-sparing procedures can be curative. However, nephrectomy is not ideal for many patients, such as those who cannot tolerate surgery because of other health-related conditions. Advances in imaging techniques h ...

Source: www.amjclinicaloncology.com --- 13 days ago
Page: 311 DOI: 10.1097/COC.0b013e31815e4539 Authors: Shiraishi, Ryu; Yamasaki, Takahiro; Saeki, Issei; Okita, Kohsuke; Yamaguchi, Yuhki; Uchida, Koichi; Terai, Shuji; Sakaida, Isao ...

Source: www.ta.ecri.org --- 19 days ago
In treatment using the VNUS Closure system (VNUS Medical Technologies, Inc., San Jose, CA, USA), varicose veins are closed endovenously rather than removed surgically. A fine catheter with a RF delivery element (electrodes) at its tip is inserted distally and threaded up the vein. The electrodes deliver the RF energy into the vein, causing resistive heating of the vein wall. The heat applied within the vein causes the collagen in the vein wall to be denatured and contract, effectively closing the vein. The endothelial cells of the vein are destroyed, preventing regrowth. The lumen of the vein is sealed with fibrotic protein, and the vein may eventually disappear altogether. In practice, the VNUS Closure System is used primarily on the GSV. It has also been used on other diseased veins, such as small saphenous veins, accessory saphenous veins, and perforating veins. ...

Source: www.ncbi.nlm.nih.gov --- 20 days ago
Related Articles Interventional treatment of neuroendocrine liver metastases. Surgeon. 2008 Aug;6(4):232-9 Authors: Knigge U, Hansen CP, Stadil F Neuroendocrine gastroenteropancreatic tumours are rare with an incidence of 2-4/100.000 per year. More than 75% of the patients develop hepatic metastases, which reduce the five year survival from 70-80% to 30-40%. In addition to chemo- and biotherapy, interventional therapy of liver metastases should be considered in order to prolong survival and reduce endocrine and local symptoms. Surgical resection is the only curative treatment, but possible in less than 10% of the patients. Curative and palliative resection, which is possible in less than 20-25% of the patients, relieve endocrine and local symptoms in 90% of the patients for more than two years, and the five year survival is prolonged to 40-85%, although metastases recur or progress in almost all patients. Tumour Ablation by Radiofrequency therapy has a palliative effect on endocrine symptoms in 70-90% of the patients for up to two years, but should not be a substitute for surgical treatment. When metastases are not eligible for surgical treatment or Ablation, embolization or chemoembolization are alternative options with a reduction in tumour burden in about 50% and a five year survival of around 60% ofthe patients. The symptomatic response rate is 90% with a mean duration of two years. Liver transplantation should be restricted to ve ...

Source: www.ncbi.nlm.nih.gov --- 13 days ago
Related Articles Image-guided thermal Ablation of hepatocellular carcinoma. Crit Rev Oncol Hematol. 2008 Jun;66(3):200-7 Authors: Lencioni R, Crocetti L Hepatocellular carcinoma (HCC) is increasingly diagnosed at an early, asymptomatic stage owing to surveillance of high-risk patients. Given the complexity of the disease, multidisciplinary assessment of tumor stage, liver function, and physical status is required for proper therapeutic planning. Patients with early-stage HCC should be considered for any of the available curative therapies, including surgical resection, liver transplantation and percutaneous image-guided Ablation. Resection is currently indicated among patients with solitary HCC and extremely well-preserved liver function, who have neither clinically significant portal hypertension nor abnormal bilirubin. Liver transplantation benefits patients who have decompensated cirrhosis and one tumor smaller than 5 cm or up to three nodules smaller than 3 cm, but donor shortage greatly limits its applicability. This difficulty might be overcome by living donation that, however, is still at an early stage of clinical application. Image-guided percutaneous Ablation is the best therapeutic choice for nonsurgical patients with early-stage HCC. While ethanol injection has been the seminal percutaneous technique, Radiofrequency Ablation has emerged as the most effective method for local tumor destruction and is currently used as the pr ...

Source: www.ncbi.nlm.nih.gov --- 32 days ago
Related Articles Minimally invasive nephron-sparing surgery. Curr Opin Urol. 2008 Sep;18(5):462-6 Authors: Berger A, Crouzet S, Canes D, Haber GP, Gill IS PURPOSE OF REVIEW: To review the evolution and current status of minimally invasive nephron-sparing surgery for renal tumors. RECENT FINDINGS: Minimally invasive nephron-sparing surgery for renal tumors encompasses extirpative laparoscopic partial nephrectomy and ablative procedures such as cryoablation, Radiofrequency Ablation, and recently radiosurgery. Minimally invasive nephron-sparing surgery modalities are associated with decreased morbidity when compared with open partial nephrectomy. Recent multicenter study comparing laparoscopic partial nephrectomy and open partial nephrectomy demonstrated that equivalent cancer-specific survival was similar between the two modalities. Encouraging long-term data are available for laparoscopic partial nephrectomy and cryoablation. However, some concerns remain about incomplete tumor cell kill after Radiofrequency Ablation. Radiosurgery is a promising new technology, but is still experimental. SUMMARY: In 2008, open partial nephrectomy and laparoscopic partial nephrectomy are the reference standards for treating the small renal mass, with laparoscopic partial nephrectomy increasingly becoming the preferred option at major tertiary referral centers. Encouraging long-term data for ablative technologies are emerging. PMID: 18670268 [PubMed - in ...

Source: www.ncbi.nlm.nih.gov --- 46 days ago
Related Articles Hepatic Malignancies: Percutaneous Radiofrequency Ablation during Percutaneous Portal or Hepatic Vein Occlusion. Radiology. 2008 Jul 15; Authors: de Baere T, Deschamps F, Briggs P, Dromain C, Boige V, Hechelhammer L, Abdel-Rehim M, Aupérin A, Goere D, Elias D Purpose: To prospectively evaluate the technical feasibility, effectiveness, and complications of percutaneous Radiofrequency (RF) Ablation for hepatic malignancies during temporary percutaneous balloon occlusion (PBO) of a large hepatic or portal vein. Materials and Methods: During a 4-year period, RF Ablation was performed in 201 patients (106 men, 95 women; age range, 41-88 years) with 233 liver tumors. Institutional review board approval was obtained to attempt RF Ablation during PBO for 18 tumors that were larger than 35 mm (mean, 43 mm +/- 7.6 [standard deviation]; range, 36-60 mm) and did not abut a portal or hepatic vein 4 mm in diameter or larger (group 1), 58 tumors 35 mm or smaller (mean, 23 mm +/- 7.3; range, 12-35 mm) that abutted a large vessel (group 2), and 20 tumors that were both larger than 35 mm (mean, 42 mm +/- 5.7; range, 38-50 mm) and abutted a large vessel (group 3). RF Ablation without PBO was performed for 137 tumors 35 mm or smaller (mean, 22 mm +/- 6.8; range, 9-35 mm) and remote from large vessels (group 4). Rate of local tumor progression was estimated with the Kaplan-Meier method, and tumor progression-free rates were compared betwe ...

Source: www.ncbi.nlm.nih.gov --- 63 days ago
Does Radiofrequency Ablation preserve long-term renal function in patients with small renal masses? Nat Clin Pract Urol. 2008 Jul 1; Authors: Shalhav AL, Shikanov SA PMID: 18594546 [PubMed - as supplied by publisher] ...

Source: www.ncbi.nlm.nih.gov --- 55 days ago
Related Articles Hypertonic saline injections to enhance the Radiofrequency thermal Ablation effect in the treatment of base of tongue in obstructive sleep apnoea patients: a pilot study. Acta Otolaryngol. 2008 Jul 10;:1-9 Authors: Back LJ, Liukko T, Rantanen I, Peltola JS, Partinen M, Ylikoski J, Makitie AA Conclusion. Hypertonic saline (HS) infiltration in the base of the tongue (BOT) in multilevel Radiofrequency Ablation (RFA) treatment was followed by significant acute complications in terms of soft tissue swelling. Three patients were defined as cured. No significant changes in the measured parameters were encountered, although, several of them showed a clear trend. New treatment modalities are needed to keep multilevel RFA treatment as a minimally invasive procedure. Objectives. To assess the efficacy and morbidity of RFA of the soft palate (SP) and BOT infiltrated with HS in obstructive sleep apnoea in a prospective, non-randomized clinical study. Patients and methods. The inclusion criteria were age between 30 and 65 years, habitual snoring and excessive daytime sleepiness, a body mass index </=33, and an apnoea-hypopnoea index >/=20. RFA of the SP and the BOT was delivered under local anaesthesia. HS solution was injected before the treatment into the BOT. The morbidity of the procedure was assessed with a visual analogue scale, and efficacy by separate questionnaires and sleep registration. The volume changes induced by the ...

Source: www.ncbi.nlm.nih.gov --- 47 days ago
[Left ventricular systolic function, paced QT dispersion, exercise tolerance and quality of life in long term follow up after ventricular pacemaker implantation (VVIR) and Radiofrequency atrioventricular junction Ablation in drug refractory atrial fibrillation] Pol Merkur Lekarski. 2008 Mar;24(141):190-4 Authors: Lelakowski J, Małecka B, Bednarek J, Bigaj J THE AIM OF THE STUDY was to analyze left ventricular systolic function and dimensions, paced QT dispersion (QTD), exercise tolerance (six minute walk test- M6) and quality of life (QOL) after RFAVJ in a 6-month (6m) and a 24-month (24m) follow-up. MATERIAL AND METHODS: RFAVJ was performed in 30 pts (18 men and 12 women) aged from 43 to 81 years (mean age 69.8+/-11.3). AF was first diagnosed from 2 to 9 (mean 5+/-2.1) years prior to Ablation. All patients received VVIR pacemakers. Pacing rate was programmed at 80 bpm. Prior to RFAVJ all patients underwent: transthoracic echocardiography (ECHO) to assess the left ventricular ejection fraction (EF), ventricular end-diastolic and end-systolic dimension (LVDD, RVDD, LVSD, respectively) and left atrial dimension; QOL assessment based on self-evaluation using: a questionnaire of the SF-36, Manolis, DASI scale. M6 on flat surface. These examinations were repeated at 6m and 24m after Ablation. The maximum QT interval (QTM), minimum QT interval (QTm) and QTD were measured from the 12-lead ECG after RFAVJ on the first day (1d) and at 6m, 24m f ...

Source: www.ncbi.nlm.nih.gov --- 60 days ago
Related Articles Idiopathic Ventricular Arrhythmias Originating From the Aortic Root Prevalence, Electrocardiographic and Electrophysiologic Characteristics, and Results of Radiofrequency Catheter Ablation. J Am Coll Cardiol. 2008 Jul 8;52(2):139-147 Authors: Yamada T, McElderry HT, Doppalapudi H, Murakami Y, Yoshida Y, Yoshida N, Okada T, Tsuboi N, Inden Y, Murohara T, Epstein AE, Plumb VJ, Singh SP, Kay GN OBJECTIVES: This study investigated the prevalence and electrocardiographic and electrophysiologic characteristics of aortic root ventricular arrhythmias (VAs). BACKGROUND: Idiopathic VAs originating from the ostium of the left ventricle may be ablated at the base of the aortic cusps. METHODS: We studied 265 patients with idiopathic VAs with an inferior QRS-axis morphology. RESULTS: The successful Ablation site was within (or below) the aortic cusps in 44 patients (16.6%). The site of the origin was the left coronary cusp (LCC) in 24 (54.5%), the right coronary cusp (RCC) in 14 (31.8%), the noncoronary cusp (NCC) in 1 (2.3%), and at the junction between the LCC and RCC (L-RCC) in 5 (11.4%) cases. The maximum amplitude of the R-wave in the inferior leads was significantly greater with an LCC than with an RCC origin (p < 0.05). The ratio of the R-wave amplitude in leads II and III was significantly greater with an LCC than with an RCC origin (p < 0.01) and was significantly smaller in the NCC than in the other sites (p < 0.0001). The ...

Source: ezinearticles.com --- 43 days ago
Radiofrequency Ablation is best recognized as a treatment for uterine fibroids, but almost 20 years ago it got its beginning in oncology with liver tumours. Logic suggested it may run too in renal cell carcinoma, the most general type of kidney tumour. ...

Source: www.marketwire.com --- 45 days ago
WINSTON-SALEM, NC (MARKET WIRE) A study of patients with kidney cancer has shown that Radiofrequency Ablation, a minimally invasive, kidney-sparing procedure, can be a successful treatment option for patients whose cancer has not spread beyond the kidney, report researchers at Wake Forest Baptist Medical Center. ...

Source: www.moreover.com --- 35 days ago
Cancer Consultants Aug 1 2008 2:38AM GMT ...