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ESTUDIOS


01 marzo 2017

DIAGNOSTIC AND INTERVENTIONAL RADIOLOGY. Ten-year experience of retrievable inferior vena cava filters in a tertiary referral center

George Tse, Trevor Cleveland, Stephen Goode

PURPOSE: A significant proportion of patients undergoing surgery have an increased incidence of acute pulmonary embolus (PE). We analyzed all patients who had a retrievable inferior vena cava (IVC) filter placed preoperatively for PE prophylaxis and investigated the long-term outcomes of the patients who did not have their filter removed.

01 marzo 2017

DIAGNOSTIC AND INTERVENTIONAL RADIOLOGY. Study on the effect of chemoembolization combined with microwave ablation for the treatment of hepatocellular carcinoma in rats

Thomas Josef Vogl, Jun Qian, Andreas Tran, Elsie Oppermann, Nagy N. Naguib, Huedayi Korkusuz, Nour-Eldin A. Nour-Eldin, Wolf Otto Bechstein

PURPOSE: We aimed to evaluate the combining effects of transarterial chemoembolization (TACE) and open local thermal microwave ablation in a hepatocellular carcinoma animal model.

01 marzo 2017

DIAGNOSTIC AND INTERVENTIONAL RADIOLOGY. Diagnostic accuracy and safety of CT-guided fine needle aspiration biopsy of pulmonary lesions with non-coaxial technique: a single center experience with 442 biopsies

Çaglar Uzun, Zehra Akkaya, Ebru Düsünceli Atman, Evren Üstüner, Elif Peker, Basak Gülpinar, Atilla Halil Elhan, Koray Ceyhan, Kayhan Çetin Atasoy

PURPOSE: We aimed to evaluate the diagnostic accuracy and safety of computed tomography (CT)-guided biopsy of pulmonary lesions with fine needle aspiration (FNA) using non-coaxial technique.

01 febrero 2016

AMERICAN JOURNAL OF ROENTGENOLOGY. Application of a Novel CT-Based Iliac Artery Calcification Scoring System for Predicting Renal Transplant Outcomes

Bradley Davis, Daniele Marin, Lynne M. Hurwitz, James Ronald, Matthew J. Ellis, Kadiyala V. Ravindra, Bradley H. Collins and Charles Y. Kim

OBJECTIVE. The objective of our study was to assess whether the degree and distribution of iliac artery calcifications as determined by a CT-based calcium scoring system correlates with outcomes after renal transplant.

01 febrero 2016

AMERICAN JOURNAL OF ROENTGENOLOGY. Technical Feasibility of Prostatic Artery Embolization From a Transradial Approach

Ari J. Isaacson, Aaron M. Fischman and Charles T. Burke

OBJECTIVE. The objective of this study was to evaluate the technical feasibility of performing prostatic artery embolization (PAE) with a transradial approach (TRA). Nineteen consecutive PAEs performed using a TRA were reviewed to determine the technical success of the procedure, which was defined as bilateral embolization. Procedural details, complications, and limitations were recorded.

01 marzo 2016

AMERICAN JOURNAL OF ROENTGENOLOGY. Conventional Ethiodized Oil Transarterial Chemoembolization for Treatment of Hepatocellular Carcinoma: Contemporary Single-Center Review of Clinical Outcomes

Leigh C. Casadaban, Jeet Minocha, James T. Bui, M. Grace Knuttinen, Charles E. Ray, Jr. and Ron C. Gaba

OBJECTIVE. The purpose of this study is to investigate the outcomes of conventional transarterial chemoembolization (TACE) treatment of hepatocellular carcinoma (HCC) in contemporary clinical practice.

01 febrero 2016

RADIOLOGY. Recent Endovascular Trials: Implications for Radiology Departments, Radiology Residency, and Neuroradiology Fellowship Training at Comprehensive Stroke Centers

Mayank Goyal, Colin P. Derdeyn, David Fiorella, Jeffrey Ross, Pamela Schaefer, Robert Tarr, Morgan C. Willson, Eric Bartlett, Max Wintermark, David Kallmes

Endovascular treatment of acute ischemic stroke is undergoing a paradigm shift similar to the one observed in interventional cardiology for patients with acute myocardial infarction (AMI). Specifically, for patients with AMI, process improvements in communication among the various providers, including first responders, emergency department staff and physicians, and cardiologists, have slashed the mean time to revascularization in this patient cohort, with resultant profound improvements in outcomes. These principles form the basis for recent guidelines on the management of AMI to provide reperfusion therapy as rapidly as possible.

01 enero 2016

RADIOLOGY. Portal Venous Interventions: State of the Art

David C. Madoff, Ron C. Gaba, Charles N. Weber, Timothy W. I. Clark, Wael E. Saad

In recent decades, there have been numerous advances in the management of liver cancer, cirrhosis, and diabetes mellitus. Although these diseases are wide ranging in their clinical manifestations, each can potentially be treated by exploiting the blood flow dynamics within the portal venous system, and in some cases, adding cellular therapies. To aid in the management of these disease states, minimally invasive transcatheter portal venous interventions have been developed to improve the safety of major hepatic resection, to reduce the untoward effects of sequelae from end-stage liver disease, and to minimize the requirement of exogenously administered insulin for patients with diabetes mellitus. This state of the art review therefore provides an overview of the most recent data and strategies for utilization of preoperative portal vein embolization, transjugular intrahepatic portosystemic shunt placement, balloon retrograde transvenous obliteration, and islet cell transplantation.

28 enero 2017

WORLD JOURNAL OF GASTROENTEROLOGY. Late-onset severe biliary bleeding after endoscopic pigtail plastic stent insertion

Muneji Yasuda, Hideki Sato, Yuki Koyama, Tomoki Sakakida, Takumi Kawakami, Takeshi Nishimura, Hideki Fujii, Yoshikazu Nakatsugawa, Shinya Yamada, Naoya Tomatsuri, Yusuke Okuyama, Hiroyuki Kimura, Takaaki Ito, Hiroyuki Morishita, Norimasa Yoshida

Here, we report our experience with a case of severe biliary bleeding due to a hepatic arterial pseudoaneurysm that had developed 1 year after endoscopic biliary plastic stent insertion. The patient, a 78-year-old woman, presented with hematemesis and obstructive jaundice. Ruptured hepatic arterial pseudoaneurysm was diagnosed, which was suspected to have been caused by long-term placement of an endoscopic retrograde biliary drainage (ERBD) stent. This episode of biliary bleeding was successfully treated by transarterial embolization (TAE). Pseudoaneurysm leading to hemobilia is a rare but potentially fatal complication in patients with long-term placement of ERBD. TAE is a minimally invasive procedure that offers effective treatment for biliary bleeding.

07 febrero 2017

WORLD JOURNAL OF GASTROENTEROLOGY. Pancreaticoduodenectomy: Secondary stenting of the celiac trunk after inefficient median arcuate ligament release and reoperation as an alternative to simultaneous hepatic artery reconstruction

Théophile Guilbaud, Jacques Ewald, Olivier Turrini, Jean Robert Delpero

In patients undergoing pancreaticoduodenectomy (PD), unrecognized hemodynamically significant celiac axis (CA) stenosis impairs hepatic arterial flow by suppressing the collateral pathways supplying arterial flow from the superior mesenteric artery and leads to serious hepatobiliary complications due to liver and biliary ischemia, with a high rate of mortality. CA stenosis is usually due to an extrinsic compression by a previously asymptomatic median arcuate ligament (MAL). MAL is diagnosed by computerized tomography in about 10% of the candidates for PD, but only half are found to be hemodynamically significant during the gastroduodenal artery clamping test with Doppler assessment, which is mandatory before any resection. MAL release is usually efficient to restore an adequate liver blood inflow and prevent ischemic complications. In cases of failure in MAL release, postponed PD with secondary stenting of the CA and reoperation for PD should be considered as an alternative to immediate hepatic artery reconstruction, which involves the risk of postoperative thrombosis of the arterial reconstruction. We recently used this two-stage strategy in a patient undergoing surgery for pancreatic adenocarcinoma.

07 febrero 2017

WORLD JOURNAL OF GASTROENTEROLOGY. Percutaneous electrochemotherapy in the treatment of portal vein tumor thrombosis at hepatic hilum in patients with hepatocellular carcinoma in cirrhosis: A feasibility study

Luciano Tarantino, Giuseppina Busto, Aurelio Nasto, Raffaele Fristachi, Luigi Cacace, Maria Talamo, Catello Accardo, Sara Bortone, Paolo Gallo, Paolo Tarantino, Riccardo Aurelio Nasto, Matteo Nicola Dario Di Minno, Pasquale Ambrosino

AIM: To treated with electrochemotherapy (ECT) a prospective case series of patients with liver cirrhosis and Vp3-Vp4- portal vein tumor thrombus (PVTT) from hepatocellular carcinoma (HCC), in order to evaluate the feasibility, safety and efficacy of this new non thermal ablative technique in those patients.

21 febrero 2017

WORLD JOURNAL OF GASTROENTEROLOGY. Anatomical resection of hepatocellular carcinoma: A critical review of the procedure and its benefits on survival

Koo Jeong Kang, Keun Soo Ahn

Hepatocellular carcinoma (HCC) is the sixth most common type of cancer and the third most frequent cause of cancer-related death. Advances in preoperative assessment of HCC (e.g., imaging studies and liver function tests), surgical techniques, and postoperative care have improved the surgical outcomes and survival of patients who undergo hepatic resection for HCC. However, in the last 20 years, the long-term survival after hepatectomy has remained unsatisfactory owing to the high rates of local recurrence and multicentric occurrence. Anatomical liver resection (AR) was introduced in the 1980s. Although several studies have revealed tangible benefits of AR for HCC, these benefits are still debated. Because most HCCs occur in patients with liver cirrhosis and poor hepatic function, there are many factors that affect survival, including the surgical method. Nevertheless, many studies have documented the perioperative and long-term benefits of AR in various conditions. In this article, we review the results of several recently published, well-designed comparative studies of AR, to investigate whether AR provides real benefits on survival outcomes. We also discuss the potential pitfalls associated with this approach.

21 febrero 2017

WORLD JOURNAL OF GASTROENTEROLOGY. Common controversies in management of biliary strictures

Mansour A Parsi

Biliary strictures are caused by a heterogeneous group of benign and malignant conditions, each requiring a specific treatment approach. Management of biliary strictures often involves endoscopy either for definite treatment, as a bridge to surgery or for palliative purposes. Endoscopic treatment of various types of biliary strictures is not standardized and there are multiple areas of controversy regarding the best treatment options. These controversies are mainly due to lack of well-designed comparative studies to support a specific therapy. This paper reviews three common areas of controversy in the endoscopic management of biliary strictures. The areas discussed in this editorial include the role of biliary drainage in resectable malignant strictures and whether such drainage should be performed routinely prior to surgery, the best endoscopic palliation for unresectable hilar strictures and whether unilateral or bilateral stenting should be attempted, and the optimal endoscopic management for dominant strictures in patients with primary sclerosing cholangitis. The goal of this editorial is twofold. The first is to review the current literature on management of the aforementioned strictures and offer recommendations based on available evidence. The second goal is to highlight the gaps in our knowledge which in turn can encourage future research on these topics.

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