نتایج جستجو برای: expanding metal stent
تعداد نتایج: 274945 فیلتر نتایج به سال:
BACKGROUND AND PURPOSE A major concern of intracranial stenting is perforator infarction. It is unclear whether the sustained radial force of a self-expanding stent or subsequent stent restenosis would cause late occlusion of perforators. METHODS We compared the baseline and poststent (>or=4 months) MRI scans of patients who underwent self-expanding stenting for recurrent ischemic symptoms at...
A self-expanding stent has recently been introduced for the treatment of wide-neck aneurysms. We describe two cases of stent malposition within large aneurysms. In the first case, the stent was dislodged during microcatheterization. This was managed by placement of a second stent through the interstices of the first followed by aneurysm coiling. In the second case, after deployment, the proxima...
Colorectal cancer (CRC) is the second most frequent cancer both in incidence and mortality in women, especially in those over 60 years of age. Diagnosis in women at gestational age is rare, so its incidence during pregnancy is low. However, an increase in its diagnosis is expected during the next years because of the raise in the average age of pregnancy.In most cases, the diagnosis is delayed ...
self-expandable metal stents (uSEMS) is regarded as difficult or even impossible when the duration of indwell exceeds a couple of weeks, because of the ingrowth of tissue [1–3]. The presence of diffuse and severe ingrowth is the main feature limiting SEMS removal [1]. In the esophagus, placement of a self-expanding plastic stent (SEPS) inside the SEMS has been shown to induce pressure necrosis ...
Double layered self-expanding metal stents (SEMSs) are an effective treatment when placed across the gastroesophageal junction for malignant esophageal obstructions. Thedouble layer provides effective prevention of stent migration, with the advantages of a covered stent [1]. However, should the stent migrate, the double layer makes endoscopic removal more difficult. A 79-year-old manwith sympto...
Anastomotic strictures occur in 3%–46.2% of patients after colonic reconstruction of the esophagus [1]. Self-expanding metal stents (SEMS) are increasingly considered for refractory or complex benign strictures of the esophagus [2]. Migration is a common complication and the stent should be removed to avoid gastrointestinal complications. A 54-year-old manwas referred to our department for dysp...
We report a case in which a spontaneous choledochoduodenal fistula occurred after biliary covered self-expanding metal stent (SEMS) placement and a late transfistula migration of the stent in a patient with malignant distal biliary obstruction. A partially covered WallFlex biliary stent (Boston Scientific) was appropriately implanted in the common bile duct. Subsequently the patient received ch...
BACKGROUND In recent decades, the use of colorectal stents for palliation or as a bridge to surgery in acute malignant colorectal obstruction has increased. We aimed to evaluate the technical and clinical efficacy, safety and clinical outcomes of endoscopic stenting for the relief of acute colorectal obstruction secondary to cancer. METHODS From March 2006 to December 2012, among 100 patients...
OBJECTIVE To assess the histological changes of the aorta, the renal arteries and the renal parenchyma in swine, induced by a metalic uncovered stent implanted in transrenal position in the abdominal aorta. METHODS Ten pigs with a mean weight of 86.6 kg and mean age of 6 months underwent implantation of metal stent graft placed in the aorta at the level of the renal arteries after 100 days of...
Fig.2 An endoscopic retrograde cholangiopancreatography (ERCP) cannula was used to puncture the mesh wall of the covered self-expandable metal stent (SEMS). A guidewire was then passed through the mesh wall and the opposite wall of the metal stent. Fig.1 A covered self-expandable metal stent (SEMS) used for endoscopic ultrasoundguided hepaticogastrostomy (EUS-HGS) had nearly migrated into the p...
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