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ESTUDIOS


01 marzo 2012

AMERICAN JOURNAL OF NEURORADIOLOGY. Cerecyte Coil Trial: Procedural Safety and Clinical Outcomes in Patients with Ruptured and Unruptured Intracranial Aneurysms

S. Coley, M. Sneade, A. Clarke, Z. Mehta, D. Kallmes, S. Cekirge, I. Saatci, D. Roy and A. Molyneux

BACKGROUND AND PURPOSE: This study arose from a need to systematically evaluate the clinical and angiographic outcomes of intracranial aneurysms treated with modified coils. We report the procedural safety and clinical outcomes in a prospective randomized controlled trial of endovascular coiling for ruptured and unruptured intracranial aneurysms, comparing polymer-loaded Cerecyte coils with bare platinum coils in 23 centers worldwide.

30 septiembre 2009

JOURNAL OF ONCOLOGY. Transarterial Chemoembolization of Metastatic Colorectal Carcinoma with Drug-Eluting Beads, Irinotecan (DEBIRI): Multi-Institutional Registry

Robert C. G. Martin, Jonathan Joshi, Ken Robbins, Dana Tomalty, Ryan O Hara, and Cliff Tatum

The purpose of this study was to evaluate the patient tolerance and efficacy of delivering locoregional chemotherapy to metastatic colorectal (MC) hepatic metastases via hepatic trans-arterial approach using irinotecan loaded drug eluting beads. This open-label, multi-center, single arm study included 30 MC patients, who had failed first line therapy. Of the 57 total embolization sessions, 12 (21% of sessions) were associated with adverse reactions during or after the treatment. After a median followup of 9 months, response rates by modified RECIST were 75% at 3 months and 66% at 6 months. Hepatic trans-arterial therapy using Irinotecan loaded DC was safe and effective in the treatment of MCC as demonstrated by a minimal complication rate and acceptable tumor response.

01 abril 2011

JOURNAL OF CLINICAL ONCOLOGY. [90Y]Yttrium Microspheres Radioembolotherapy in Desmoplastic Small Round Cell Tumor Hepatic Metastases

Vivek Subbiah, Ravi Murthy and Pete M. Anderson

A 20-year-old otherwise healthy white man presented with a 5-week history of abdominal pain and diarrhea. Investigations for acute viral hepatitis were negative. Over the next month, he developed abdominal distention. Intravenous iodinated contrast-enhanced computed tomography (CT) of the abdomen and pelvis revealed multiple bulky soft tissue intraperitoneal masses and paraesophageal lymphadenopathy. A diagnostic CT-guided biopsy of a lesion in the left upper abdomen was performed. Immunohistochemistry of the specimen was positive for desmin, cytokeratin, FLI1, and BAF47; focally positive for epithelial membrane antigen; and negative for synaptophysin neuron-specific enolase, CD45, CD30, α-fetoprotein, human chorionic gonadotropin, and CD56. The tumor was also found to be positive for the EWSR1-WT1 primary fusion transcript, pathognomonic for desmoplastic small round cell tumor (DSRCT).

01 junio 2011

SEMINARS IN INTERVENTIONAL RADIOLOGY. Radioembolization Complicated by Dissection of the Common Femoral Artery

Sarah G. Deitch, M.D. and Ramona Gupta, M.D.

The common femoral artery is the most frequently used access site for angiographic procedures in interventional radiology. Potential complications of common femoral arteriotomy include hematoma formation, pseudoaneurysm, uncontrolled groin or retroperitoneal bleeding, acute arterial occlusion, dissection, and arteriovenous fistula formation. In a case such as the one described here, with a common femoral artery dissection with intraluminal thrombus and vessel occlusion, the complication may have occurred at the time of access or at the time of closure, with both procedure-associated and patient-specific risk factors affecting the overall risk of complications. Though some studies have shown an increased risk of complications with the use of arterial closure devices, others have found no increase. In any patient with symptoms following a femoral arteriotomy, rapid diagnosis and treatment is necessary to avoid further complications. Both patient-specific and procedure-associated risk factors should be considered prior to arteriotomy and usage of an arterial closure device.

01 enero 2011

INTERNATIONAL JOURNAL OF SURGICAL ONCOLOGY. Yttrium-90 Radioembolization for Colorectal Cancer Liver Metastases: A Single Institution Experience

Gary W. Nace, Jennifer L. Steel, Nikhil Amesur, Albert Zajko, Bryon E. Nastasi, Judith Joyce, Michael Sheetz, and T. Clark Gamblin

Purpose. We sought to evaluate our experience using yttrium-90 (90Y) resin microsphere hepatic radioembolization as salvage therapy for liver-dominant metastatic colorectal cancer (mCRC). Methods. A retrospective review of consecutive patients with unresectable mCRC who were treated with 90Y after failing first and second line systemic chemotherapy. Demographics, treatment dose, biochemical and radiographic response, toxicities, and survival were examined. Results. Fifty-one patients underwent 90Y treatments of which 69% were male. All patients had previously undergone extensive chemotherapy, 31% had undergone previous liver-directed therapy and 24% had a prior liver resection. Using RECIST criteria, either stable disease or a partial response was seen in 77% of patients. Overall median survival from the time of first 90Y treatment was 10.2 months (95% CI = 7.5–13.0). The absence of extrahepatic disease at the time of treatment with 90Y was associated with an improved survival, median survival of 17.0 months (95% CI = 6.4–27.6), compared to those with extrahepatic disease at the time of treatment with 90Y, 6.7 months (95% CI = 2.7–10.6 Conclusion: 90Y therapy is a safe locoregional therapy that provides an important therapeutic option to patients who have failed first and second line chemotherapy and have adequate liver function and performance status.

01 mayo 2011

INTERNATIONAL JOURNAL OF SURGICAL ONCOLOGY. Minimally Invasive Evaluation and Treatment of Colorectal Liver Metastases

Anton L. Gueorguiev, Richard Mackey, Gopal C. Kowdley, Jesus Esquivel and Steven C. Cunningham

Minimally invasive techniques used in the evaluation and treatment of colorectal liver metastases (CRLMs) include ultrasonography (US), computed tomography, magnetic resonance imaging, percutaneous and operative ablation therapy, standard laparoscopic techniques, robotic techniques, and experimental techniques of natural orifice endoscopic surgery. Laparoscopic techniques range from simple staging laparoscopy with or without laparoscopic intraoperative US, through intermediate techniques including simple liver resections (LRs), to advanced techniques such as major hepatectomies. Hereins, we review minimally invasive evaluation and treatment of CRLM, focusing on a comparison of open LR (OLR) and minimally invasive LR (MILR). Although there are no randomized trials comparing OLR and MILR, nonrandomized data suggest that MILR compares favorably with OLR regarding morbidity, mortality, LOS, and cost, although significant selection bias exists. The future of MILR will likely include expanding criteria for resectability of CRLM and should include both a patient registry and a formalized process for surgeon training and credentialing.

01 febrero 2011

HPB. Hepatectomy after hepatic arterial therapy with either yttrium-90 or drug-eluting bead chemotherapy: is it safe?

Russell E Brown,1 Matthew R Bower,1 Tiffany L Metzger,1 Charles R Scoggins,1 Kelly M McMasters,1 Michael J Hahl,2 Cliff Tatum,3 and Robert CG Martin1

Background: The use of hepatic arterial therapy (HAT) with either yttrium-90 or drug-eluting bead therapy for initially unresectable hepatic malignancies has risen significantly. The safety of hepatic resection after hepatic arterial therapy (HAT) is not established.

13 febrero 2012

WORLD JOURNAL OF SURGICAL ONCOLOGY. Surgical approach to multifocal hepatocellular carcinoma with portal vein thrombosis and arterioportal shunt leading to portal hypertension and bleeding: a case report

Francesca Ratti, Federica Cipriani, Michele Paganelli, Gianfranco Ferla, and Luca AM Aldrighetti

It is reported the case of a 69 years man who presented to the Emergency Room because of pain and abdominal distension from ascites. After admission and paracentesis placement, he developed a digestive hemorrhage due to oesophageal varices from portal ipertension secondary to the formation of a portal shunt concomitant with a multifocal HepatoCellular Carcinoma (HCC) with portal vein thrombosis (PVT). The patient underwent endoscopic varices ligation, twice transarterial embolization (TAE) of arterial branches feeding the shunt and subsequent left hepatectomy. During the postoperative course he developed mild and transient signs of liver failure and was discharged in postoperative day 16. He is alive and disease free 8 months after surgery.

08 mayo 2011

THE AMERICAN JOURNAL OF GASTROENTEROLOGY. Radiofrequency Ablation for Hepatocellular Carcinoma: 10-Year Outcome and Prognostic Factors

Shuichiro Shiina MD, PhD, Ryosuke Tateishi MD, PhD, Toru Arano MD, Koji Uchino MD, Kenichiro Enooku MD, PhD, Hayato Nakagawa MD, PhD, Yoshinari Asaoka MD, PhD, Takahisa Sato MD, PhD, Ryota Masuzaki MD, PhD, Yuji Kondo MD, PhD, Tadashi Goto MD, PhD, Haruhiko Yoshida MD, PhD, Masao Omata MD, PhD and Kazuhiko Koike MD, PhD

OBJECTIVES: Radiofrequency ablation (RFA) is widely performed for hepatocellular carcinoma (HCC). However, there has been no report on 10-year outcome of RFA. The objective of this study was to report a 10-year consecutive case series at a tertiary referral center.

01 octubre 2011

CARDIOVASCULAR AND INTERVENTIONAL RADIOLOGY. Technical Solutions to Ensure Safe Yttrium-90 Radioembolization in Patients With Initial Extrahepatic Deposition of 99mTechnetium–Albumin Macroaggregates

M. W. Barentsz, M. A. D. Vente, M. G. E. H. Lam, M. L. J. Smits, J. F. W. Nijsen, B. A. Seinstra, C. E. N. M. Rosenbaum, H. M. Verkooijen, B. A. Zonnenberg, M. A. A. J. Van den Bosch

Purpose: To evaluate the incidence of extrahepatic deposition of technetium-99m–labeled albumin macroaggregates (99mTc-MAA) after pretreatment angiography, before yttrium-90 radioembolizaton (90Y-RE), and to report on technical solutions that can be used to ensure safe delivery of 90Y-microspheres in patients with initial extrahepatic deposition.

01 diciembre 2012

SURGICAL ONCOLOGY. Chemotherapy-Associated Liver Injury in Patients with Colorectal Liver Metastases: A Systematic Review and Meta-analysis

Stuart M. Robinson MRCS, Colin H. Wilson PhD, FRCS, Alastair D. Burt MD, FRCPath, FRCP, Derek M. Manas FRCS, Steven A. White MD, FRCS

Background: Chemotherapy-associated liver injury is a major cause for concern when treating patients with colorectal liver metastases. The aim of this review was to determine the pathological effect of specific chemotherapy regimens on the hepatic parenchyma as well as on surgical morbidity, mortality and overall survival.

01 octubre 2012

CASE REPORT RADIOLOGY. Celiac Artery Stenting to Facilitate Hepatic Yttrium-90 Radioembolization Therapy

Murthy R. Chamarthy, Terence W. Hughes, Mohit Gupta, Josephina A. Vossen, Noel B. Velasco, and Kenneth M. Zinn

Radioembolization offers a novel way to treat the nonresectable, liver predominant hepatic malignancies with better tumor response and overall progression-free survival rates. Transarterial catheter-based radioembolization procedure involves the hepatic arterial administration of glass- or resin-based beta emitting Yttirum-90 microspheres. Safe delivery of the tumoricidal radiation dose requires careful angiogram planning and coil embolization to quantify lung shunting and prevent systemic toxicity, respectively. Diagnostic pretreatment angiogram also serves to identify the hepatic arterial variant anatomy and other coexisting pathologies that might require a different or alternative approach. We describe a complex case of celiac artery stenosis with tortuous pancreaticoduodenal arterial arcade precluding access to the right hepatic artery for performing radioembolization. Celiac artery stenting of the stenosis was performed to facilitate subsequent safe and successful Yttrium-90 microsphere radioembolization.

01 febrero 2013

EUROPEAN HEART JOURNAL. Potential lifetime cost-effectiveness of catheter-based renal sympathetic denervation in patients with resistant hypertension

Marc Dorenkamp, Klaus Bonaventura, Alexander W. Leber, Julia Boldt, Christian Sohns, Leif-Hendrik Boldt, Wilhelm Haverkamp, Ulrich Frei and Mattias Roser

Aims Recent studies have demonstrated the safety and efficacy of catheter-based renal sympathetic denervation (RDN) for the treatment of resistant hypertension. We aimed to determine the cost-effectiveness of this approach separately for men and women of different ages.

01 febrero 2012

EUROPEAN HEART JOURNAL. Determinants of magnetic resonance imaging detected carotid plaque components: the Rotterdam Study

Quirijn J.A. van den Bouwhuijsen, Meike W. Vernooij, Albert Hofman, Gabriel P. Krestin, Aad van der Lugt and Jacqueline C.M. Witteman

Aims Components of carotid atherosclerotic plaque such as intraplaque haemorrhage and lipid core are important determinants of plaque progression and destabilization. The association between plaque components and risk factors for cardiovascular disease is not well studied.

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