The selection of an embolic agent should be based on the clinical indication for the procedure, the desire to produce temporary or permanent occlusion, the level of occlusion (proximal or distal), flow dynamics/collateral circulation, the risk of complications such as necrosis or nontarget embolization, and cost. Microparticles can be made of several types of materials, including polyvinyl alcohol (PVA foam embolization particles, Cook Medical, Bloomington, IN), acrylamido polyvinyl alcohol (Bead Block, Biocompatibles UK Ltd, Surrey, UK), hydrogel core with Polyzene-F coating (Embozene microspheres, CeloNova Biosciences, Inc., San Antonio, TX), trisacryl gelatin microspheres (Embosphere microspheres, Merit Medical Systems, Inc., South Jordan, UT), and a combination of vinyl acetate and methyl acrylate with sodium acrylate alcohol copolymer (HepaSphere microspheres, Merit Medical Systems, Inc.).
Purpose: To evaluate clinical outcomes, characterize adherent tissue, and analyze inferior vena cava (IVC) filter fractures in patients undergoing complex retrieval for management of filter-related complications. To elucidate mechanisms of filter fracture by radiographic and electron microscopic (EM) evaluation.
Purpose: To compare the efficacies of transarterial chemoembolization (TACE) and sorafenib in patients with advanced-stage hepatocellular carcinoma (HCC).
OBJECTIVE. The purpose of this article is to retrospectively evaluate the long-term clinical results of balloon dilation in the treatment of benign anastomotic strictures after esophagectomy and to identify factors associated with stricture recurrence.
Portal hypertensive biliopathy (PHB) is characterized by anatomical and functional abnormalities of the intrahepatic, extrahepatic and pancreatic ducts, in patients with portal hypertension associated to extrahepatic portal vein obstruction and less frequently to cirrhosis. These morphological changes, consisting in dilatation and stenosis of the biliary tree, are due to extensive venous collaterals occurring in an attempt to decompress the portal venous blockage. It is usually asymptomatic until it progresses to more advanced stages with cholestasis, jaundice, biliary sludge, gallstones, cholangitis and finally biliary cirrhosis. Imaging modalities of the biliary tree such as Doppler ultrasound, computed tomography, magnetic resonance cholangiopancreatography and endoscopic retrograde cholangiopancreatography are essential to establish the diagnosis and the need of therapeutical interventions. Once the diagnosis is established, treatment with ursodesoxycholic acid seems to be beneficial. Decompression of the biliary tree to dilate, remove stones or implant biliary prosthesis by endoscopic or surgical procedures (hepato-yeyunostomy) usually resolves the cholestatic picture and prevents septic complications. The ideal treatment is the decompression of the portal system, with transjugular intrahepatic porto-systemic shunt or a surgical porto-systemic shunt. Unfortunately, few patients will be candidates for these procedures due to the extension of the thrombotic process. The purpose of this paper is to report the first 3 cases of PHB seen in a Colombian center and to review the literature.
Purpose: To evaluate the safety and effectiveness of the Crux vena cava filter in patients at risk for pulmonary embolism (PE).
Purpose: To evaluate initial clinical outcomes of volumetric magnetic resonance (MR)-guided high-intensity focused ultrasound (HIFU) ablation by using a one-layer strategy to treat large (>10 cm in diameter) uterine fibroids, with investigation of the correlation between effectiveness of the one-layer strategy and dynamic contrast material–enhanced (DCE) MR parameters.
PURPOSE: We aimed to present our clinical experience with the renal artery catheterization (RAC) technique, which reduces the volume of intra-arterial contrast media (ICM) used during endovascular aortic repair (EVAR), and describe the short-term results of this technique.
Chronic venous disease (CVD) management has undergone dramatic changes during the past decade as a result of technological developments. Fluoroscopy with contrast venography remains useful for selected cases but is no longer the workhorse for diagnosis and treatment of venous disease. Fluoroscopy generates images by delivering ionizing radiation and requires intravenous injection of nephrotoxic iodine-based solutions for visualization of the venous system. The risk of radiation-induced and/or contrastinduced toxicity makes fluoroscopy a less attractive venous imaging modality.
AIM: To assess the safety and efficacy of trans-arterial chemo-embolization (TACE) in very elderly patients.
Objectives: Liver transplantation (LT) in Milan Criteria (MC) hepatocellular carcinoma (HCC) has excellent outcomes. Pre-transplant loco-regional therapy (LRT) has been used to downstage HCC to meet the MC. However, its benefit in patients with a brief waiting time to transplant remains unclear. This study evaluated outcomes in patients with short waitlist times to LT for MC-compliant HCC.
OBJECTIVE. The objective of our study was to assess the technical feasibility and clinical effectiveness of expandable metallic stent placement in patients with nonanastomotic malignant jejunal obstruction after total gastrectomy with esophagojejunostomy.
Superior vena cava (SVC) syndrome is a serious complication of thoracic malignancy. Endovascular palliative treatment of SVC syndrome related to malignancy has largely supplanted open surgical techniques. Venoplasty and endovascular stenting are associated with rapid clinical improvement and rare occurrence of complications.1 Some authors have previously described using a dual-access technique, involving snaring and externalizing a through-wire across femoral and jugular access points.2,3
Background: In selected patients with chronic pancreatitis, extensive pancreatectomy can be effective for the treatment of intractable pain. The resultant morbid diabetes can be ameliorated with islet autotransplantation (IAT). Conventionally, islet infusion occurs intraoperatively after islet processing. A percutaneous transhepatic route in the immediate postoperative period is an alternative approach.
AIM: To investigate the influence of percutaneous local therapy on gastric myoelectrical activity in patients with hepatocellular carcinomas.
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