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28 junio 2015

WORLD JOURNAL OF GASTROENTEROLOGY. Enteral metallic stenting by balloon enteroscopy for obstruction of surgically reconstructed intestine

Kazunari Nakahara, Chiaki Okuse, Nobuyuki Matsumoto, Keigo Suetani, Ryo Morita, Yosuke Michikawa, Shun-ichiro Ozawa, Kosuke Hosoya, Shinjiro Kobayashi, Takehito Otsubo and Fumio Itoh

We present three cases of self-expandable metallic stent (SEMS) placement using a balloon enteroscope (BE) and its overtube (OT) for malignant obstruction of surgically reconstructed intestine. A BE is effective for the insertion of an endoscope into the deep bowel. However, SEMS placement is impossible through the working channel, because the working channel of BE is too small and too long for the stent device. Therefore, we used a technique in which the BE is inserted as far as the stenotic area; thereafter, the BE is removed, leaving only the OT, and then the stent is placed by inserting the stent device through the OT. In the present three cases, a modification of this technique resulted in the successful placement of the SEMS for obstruction of surgically reconstructed intestine, and the procedures were performed without serious complications. We consider that the present procedure is extremely effective as a palliative treatment for distal bowel stenosis, such as in the surgically reconstructed intestine.

28 junio 2015

WORLD JOURNAL OF GASTROENTEROLOGY. Successful biliary drainage using a metal stent through the gastric stoma

Kazuyuki Matsumoto, Hironari Kato, Koichiro Tsutsumi, Yutaka Akimoto, Daisuke Uchida, Takeshi Tomoda, Naoki Yamamoto, Yasuhiro Noma, Shigeru Horiguchi, Hiroyuki Okada and Kazuhide Yamamoto

We report a case of biliary drainage for malignant stricture using a metal stent with an ultrathin endoscope through the gastric stoma. A 78-year-old female was referred to our hospital for jaundice and fever. She had undergone percutaneous endoscopic gastrostomy (PEG) for esophageal obstruction after radiation therapy for cancer of the pharynx. Abdominal contrast-enhanced computed tomography showed a 3-cm enhanced mass in the middle bile duct and dilatation of the intra-hepatic bile duct. We initially performed endoscopic retrograde cholangiopancreatography (ERCP) with a trans-oral approach. However, neither the side-viewing endoscope nor the ultrathin endoscope passed through the esophageal orifice. Thus, we eventually performed ERCP via the PEG stoma using an ultrathin endoscope. We performed biliary drainage with a 6F introducer self-expanding metal stent. The cytology findings obtained by brush cytology showed malignancy. Her laboratory results were restored to normal levels after drainage and no complication occurred.

21 junio 2015

WORLD JOURNAL OF GASTROENTEROLOGY. Hemorrhagic hemangioma in the liver: A case report

Jeong Min Kim, Woo Jin Chung, Byoung Kuk Jang, Jae Seok Hwang, Yong Hoon Kim, Jung Hyeok Kwon and Mi Sun Choi

Hemangioma is the most common type of benign tumor that arises in the liver. Although rupture and hemorrhage of hepatic hemangioma are rare complications, they can be the cause of mortality. The authors report a case of hemorrhagic hepatic hemangioma: in a 54-year-old woman who was admitted with epigastric pain. She had taken oral contraceptives several weeks prior. The results of a blood examination were normal. An abdominal computed tomography scan revealed a tumor in hepatic segment 4, and a hemorrhage inside the cystic mass was suspected. The mass was removed laparoscopically to confirm the tumor properties and control the hemorrhage. The pathologic findings of the resected mass were consistent with hepatic hemangioma with intratumoral hemorrhage. The patient was discharged 8 d after the surgery, without further complications or complaints, and the patient’s condition was found to have improved during follow-up.

14 junio 2015

WORLD JOURNAL OF GASTROENTEROLOGY. Portal vein thrombosis in cirrhosis: Controversies and latest developments

Damian J Harding, M Thamara PR Perera, Frederick Chen, Simon Olliff and Dhiraj Tripathi

Portal vein thrombosis (PVT) is encountered in liver cirrhosis, particularly in advanced disease. It has been a feared complication of cirrhosis, attributed to significant worsening of liver disease, poorer clinical outcomes and potential inoperability at liver transplantation; also catastrophic events such as acute intestinal ischaemia. Optimal management of PVT has not yet been addressed in any consensus publication. We review current literature on PVT in cirrhosis; its prevalence, pathophysiology, diagnosis, impact on the natural history of cirrhosis and liver transplantation, and management. Studies were identified by a search strategy using MEDLINE and Google Scholar. The incidence of PVT increases with increasing severity of liver disease: less than 1% in well-compensated cirrhosis, 7.4%-16% in advanced cirrhosis. Prevalence in patients undergoing liver transplantation is 5%-16%. PVT frequently regresses instead of uniform thrombus progression. PVT is not associated with increased risk of mortality. Optimal management has not been addressed in any consensus publication. We propose areas for future research to address unresolved clinical questions.

07 junio 2015

WORLD JOURNAL OF GASTROENTEROLOGY. Transarterial radioembolization for hepatocellular carcinoma: An update and perspectives

Rodolfo Sacco, Valeria Mismas, Sara Marceglia, Antonio Romano, Luca Giacomelli, Marco Bertini, Graziana Federici, Salvatore Metrangolo, Giuseppe Parisi, Emanuele Tumino, Giampaolo Bresci, Ambra Corti, Manuel Tredici, Michele Piccinno, Luigi Giorgi, Carlo Bartolozzi and Irene Bargellini

In the last decade trans-arterial radioembolization has given promising results in the treatment of patients with intermediate or advanced stage hepatocellular carcinoma (HCC), both in terms of disease control and tolerability profile. This technique consists of the selective intra-arterial administration of microspheres loaded with a radioactive compound (usually Yttrium90), and exerts its therapeutic effect through the radiation carried by these microspheres. A careful and meticulous selection of patients is crucial before performing the radioembolization to correctly perform the procedure and reduce the incidence of complications. Radioembolization is a technically complex and expensive technique, which has only recently entered clinical practice and is supported by scant results from phase III clinical trials. Nevertheless, it may represent a valid alternative to transarterial chemoembolization (TACE) in the treatment of intermediate-stage HCC patients, as shown by a comparative retrospective assessment that reported a longer time to progression, but not of overall survival, and a more favorable safety profile for radioembolization. In addition, this treatment has reported a higher percentage of tumor shrinkage, if compared to TACE, for pre-transplant downsizing and it represents a promising therapeutic option in patients with large extent of disease and insufficient residual liver volume who are not immediately eligible for surgery. Radioembolization might also be a suitable companion to sorafenib in advanced HCC or it can be used as a potential alternative to this treatment in patients who are not responding or do not tolerate sorafenib.

07 junio 2015

WORLD JOURNAL OF GASTROENTEROLOGY. Innovations and techniques for balloon-enteroscope-assisted endoscopic retrograde cholangiopancreatography in patients with altered gastrointestinal anatomy

Hiroshi Yamauchi, Mitsuhiro Kida, Hiroshi Imaizumi, Kosuke Okuwaki, Shiro Miyazawa, Tomohisa Iwai and Wasaburo Koizumi

Endoscopic retrograde cholangiopancreatography (ERCP) remains challenging in patients who have undergone surgical reconstruction of the intestine. Recently, many studies have reported that balloon-enteroscope-assisted ERCP (BEA-ERCP) is a safe and effective procedure. However, further improvements in outcomes and the development of simplified procedures are required. Percutaneous treatment, Laparoscopy-assisted ERCP, endoscopic ultrasound-guided anterograde intervention, and open surgery are effective treatments. However, treatment should be noninvasive, effective, and safe. We believe that these procedures should be performed only in difficult-to-treat patients because of many potential complications. BEA-ERCP still requires high expertise-level techniques and is far from a routinely performed procedure. Various techniques have been proposed to facilitate scope insertion (insertion with percutaneous transhepatic biliary drainage (PTBD) rendezvous technique, Short type single-balloon enteroscopes with passive bending section, Intraluminal injection of indigo carmine, CO2 inflation guidance), cannulation (PTBD or percutaneous transgallbladder drainage rendezvous technique, Dilation using screw drill, Rendezvous technique combining DBE with a cholangioscope, endoscopic ultrasound-guided rendezvous technique), and treatment (overtube-assisted technique, Short type balloon enteroscopes) during BEA-ERCP.

28 mayo 2015

WORLD JOURNAL OF GASTROENTEROLOGY. Contemporary concepts of the medical therapy of portal hypertension under liver cirrhosis

Dmitry Victorovich Garbuzenko

Severe complications of liver cirrhosis are mostly related to portal hypertension. At the base of the pathogenesis of portal hypertension is the increase in hepatic vascular resistance to portal blood flow with subsequent development of hyperdynamic circulation, which, despite of the formation of collateral circulation, promotes progression of portal hypertension. An important role in its pathogenesis is played by the rearrangement of vascular bed and angiogenesis. As a result, strategic directions of the therapy of portal hypertension under liver cirrhosis include selectively decreasing hepatic vascular resistance with preserving or increasing portal blood flow, and correcting hyperdynamic circulation and pathological angiogenesis, while striving to reduce the hepatic venous pressure gradient to less than 12 mmHg or 20% of the baseline. Over the last years, substantial progress in understanding the pathophysiological mechanisms of hemodynamic disorders under liver cirrhosis has resulted in the development of new drugs for their correction. Although the majority of them have so far been investigated only in animal experiments, as well as at the molecular and cellular level, it might be expected that the introduction of the new methods in clinical practice will increase the efficacy of the conservative approach to the prophylaxis and treatment of portal hypertension complications. The purpose of the review is to describe the known methods of portal hypertension pharmacotherapy and discuss the drugs that may affect the basic pathogenetic mechanisms of its development.

28 mayo 2015

WORLD JOURNAL OF GASTROENTEROLOGY. Radiofrequency ablation for treatment of hypersplenism: A feasible therapeutic option

Guilherme Lopes P Martins, Joao Paulo G Bernardes, Marcello S Rovella, Raphael G Andrade, Publio Cesar C Viana, Paulo Herman, Giovanni Guido Cerri and Marcos Roberto Menezes

We present a case of a patient with hypersplenism secondary to portal hypertension due to hepato-splenic schistosomiasis, which was accompanied by severe and refractory thrombocytopenia. We performed spleen ablation and measured the total spleen and ablated volumes with contrast-enhanced computed tomography and volumetry. No major complications occurred, thrombocytopenia was resolved, and platelet levels remained stable, which allowed for early treatment of the patient’s underlying disease. Previous work has shown that splenic radiofrequency ablation is an attractive alternative treatment for hypersplenism induced by liver cirrhosis. We aimed to contribute to the currently sparse literature evaluating the role of radiofrequency ablation (RFA) in the management of hypersplenism. We conclude that splenic RFA appears to be a viable and promising option for the treatment of hypersplenism.

01 junio 2015

CIRCULATION: CARDIOVASCULAR INTERVENTIONS. Three-Year Outcomes Associated With Embolic Protection in Saphenous Vein Graft Intervention

J. Matthew Brennan, MD, MPH, Wesam Al-Hejily, MD, David Dai, PhD, Richard E. Shaw, PhD, Marina Trilesskaya, MD, Sunil V. Rao, MD, Emmanouil S. Brilakis, MD, PhD, Kevin J. Anstrom, PhD, John C. Messenger, MD, Eric D. Peterson, MD, MPH, Pamela S. Douglas, MD and Michael H. Sketch Jr, MD

Background: Information is limited on contemporary use and outcomes of embolic protection devices (EPDs) in saphenous vein graft interventions.

01 abril 2013

JOURNAL OF VASCULAR SURGERY. Intrathoracic subclavian artery aneurysm repair in the thoracic endovascular aortic repair era

Nicholas D. Andersen, MD, Michael E. Barfield, MD, Jennifer M. Hanna, MD, MBA, Asad A. Shah, MD, Cynthia K. Shortell, MD, Richard L. McCann, MD, G. Chad Hughes, MD

Objective: Intrathoracic subclavian artery aneurysms (SAAs) are rare aneurysms that often occur in association with congenital aortic arch anomalies and/or concomitant thoracic aortic pathology. The advent of thoracic endovascular aortic repair (TEVAR) methods may complement or replace conventional open SAA repair. Herein, we describe our experience with SAA repair in the TEVAR era.

01 abril 2013

JOURNAL OF VASCULAR SURGERY. Clinical efficacy of endovascular therapy for patients with critical limb ischemia attributable to pure isolated infrapopliteal lesions

Osamu Iida, MD, Yoshimitsu Soga, MD, Yasutaka Yamauchi, MD, Keisuke Hirano, MD, Daizo Kawasaki, MD, Terutoshi Yamaoka, MD, Mitsuyoshi Takahara, MD, Masaaki Uematsu, MD, PhD

Background: Prognosis of endovascular therapy (EVT) for isolated infrapopliteal lesions has not been adequately studied. We investigated and risk-stratified long-term prognosis after EVT for critical limb ischemia (CLI) attributable to isolated infrapopliteal lesions.

01 abril 2013

JOURNAL OF VASCULAR SURGERY. Bifurcated coronary stents for infrapopliteal angioplasty in critical limb ischemia

Roberto Silingardi, MD, Sebastiano Tasselli, MD, Valentina Cataldi, MD, Roberto Moratto, MD, Stefano Gennai, MD, Giovanni Coppi, MD, Luigi Marcheselli, BA, Gioacchino Coppi, MD

Objective: The goal of this article is to report the preliminary results of infrapopliteal percutaneous transluminal angioplasty stenting with the Nile Croco coronary bifurcated stent (Minvasys, Gennevilliers, France) for selected patients with critical limb ischemia (CLI).

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