Biliary stents are widely used as an alternative treatment for benign biliary obstruction, choledocholithiasis, biliary fistulas or leak from the cystic duct after cholecystectomy. They occupy a special position in the palliative treatment of malignant biliary strictures. Like any other treatment method, this one also has its complications. Most often it is the development of stent obstruction and jaundice or cholangitis. Less common complications include proximal or distal biliary stent migration. The authors describe a case study of one of the possible complications of migrated biliary stent. Key words: biliary stent - migration - complications - treatment.

• MeSH
• cholestáza terapie   MeSH
• lidé MeSH
• migrace cizích těles etiologie   chirurgie   MeSH
• stenty škodlivé účinky   MeSH
• střevní obstrukce etiologie   chirurgie   MeSH
• tenké střevo * chirurgie   MeSH
• Check Tag
• lidé MeSH
• Publikační typ
• časopisecké články MeSH

• MeSH
• aneurysma srdce etiologie   MeSH
• katetrizace metody   MeSH
• koronární restenóza etiologie   MeSH
• lidé středního věku MeSH
• lidé MeSH
• modulátory tubulinu terapeutické užití   MeSH
• opakovaná terapie MeSH
• paclitaxel terapeutické užití   MeSH
• selhání protézy škodlivé účinky   MeSH
• stenty uvolňující léky škodlivé účinky   MeSH
• Check Tag
• lidé středního věku MeSH
• lidé MeSH
• ženské pohlaví MeSH
• Publikační typ
• časopisecké články MeSH
• kazuistiky MeSH
• práce podpořená grantem MeSH
• Research Support, N.I.H., Extramural MeSH
• Názvy látek
• modulátory tubulinu MeSH
• paclitaxel MeSH

We report female patient, age 51, with clinically definitive multiple sclerosis (CDMS) since 1998, who underwent two PTA procedures with stent implantation for CCSVI in 2010. Expanded disability status scale (EDSS) worsened since the procedure from 4.5 to 6. Total number of three stents was implanted (two of them in the right internal jugular vein). In six month time, in 2011, patient was referred for independent examination by computer tomography (CT) phlebography for right-sided neck pain. Dislocation of stents on the right side and thrombosis of left sided stent was found. Conservative approach was used so far. Our short report is showing possible complications of PTA and stenting in jugular veins in so called CCSVI and bringing information about neurological state (EDSS) worsening in a subject. Continuation of stent migration in the future is probable, possibly resulting in pulmonary embolism with fatal risk for the patient. We strongly ask for restriction of PTA procedure in so called CCSVI, which concept was not proven to be relevant to MS.

• MeSH
• angioplastika škodlivé účinky   MeSH
• chronická nemoc MeSH
• lidé středního věku MeSH
• lidé MeSH
• migrace cizích těles terapie   MeSH
• mozek krevní zásobení   MeSH
• recidiva MeSH
• roztroušená skleróza komplikace   MeSH
• stenóza MeSH
• stenty škodlivé účinky   MeSH
• venae jugulares patologie   chirurgie   MeSH
• žilní insuficience komplikace   chirurgie   MeSH
• Check Tag
• lidé středního věku MeSH
• lidé MeSH
• ženské pohlaví MeSH
• Publikační typ
• časopisecké články MeSH
• kazuistiky MeSH

This retrospective case series describes the signalments, clinical signs, diagnostic test results, and postoperative complications obtained from the medical records of 10 client-owned dogs that underwent treatment for grade IV tracheal collapse using double-wire woven nitinol stents between October 2017 and September 2021. Respiratory signs resolved in all dogs immediately after tracheal stent placement. Mild to moderate stent fractures were identified in five dogs, of which two showed concurrent respiratory distress necessitating re-stenting after several months. Minor complications, such as stent migration, were absent. The double-wire woven nitinol stent optimised for the canine trachea showed favourable outcomes and minimal complications.

• Klíčová slova
• canine tracheal stent, self-expanding nitinol stent, stent fracture,
• Publikační typ
• časopisecké články MeSH
• kazuistiky MeSH

PURPOSE: To evaluate expandable stents healed into vein wall as autologous vein stent-grafts for endoluminal grafting. MATERIALS AND METHODS: Balloon expandable stents were placed into external jugular veins of eight dogs. Stent and vein patency was followed by ultrasonography. Five weeks after stent placement, jugular veins with endothelialized stent were harvested. The autologous vein stent-grafts were divided into two groups. In group A, autologous vein stent-grafts (n = 3) were placed immediately into Baker solution for microscopic examination. In group B, autologous vein stent-grafts (n = 3) underwent mechanical manipulation; they were compressed, mounted on angioplasty balloon, pushed through a 9-F sheath and dilated. The autologous vein stent-graft endothelialization and changes after mechanical manipulation were evaluated by light and electron microscopy. RESULTS: Stent placement was successful in seven dogs. One stent migrated into the pulmonary artery. One well placed stent was damaged by compression dressing and thrombosed. At 5 weeks, gross and microscopic examinations revealed the autologous vein stent-grafts were fully covered by a 0.115- +/- 0.036-mm-thick neointimal layer. Small wall thrombus was observed in one autologous vein stent-graft. Repeated manipulations did not result in any intimal damage or stent loosening in the autologous vein stent-grafts. CONCLUSION: Expandable stents healed into a vein have potential to be used as autologous vein stent-grafts for endoluminal grafting without risk of disruption during percutaneous transcatheter introduction.

• MeSH
• cévní endotel cytologie   ultrastruktura   MeSH
• cévní protézy * MeSH
• mikroskopie elektronová rastrovací MeSH
• psi MeSH
• stenty * MeSH
• studie proveditelnosti MeSH
• venae jugulares cytologie   MeSH
• zvířata MeSH
• Check Tag
• psi MeSH
• zvířata MeSH
• Publikační typ
• časopisecké články MeSH
• práce podpořená grantem MeSH

The aim of this presentation is demonstrate two case reports of very rare complications of migration of the duodenobiliar stent to the sigmoid colon area. Within two months last year we had 2 patients with bowel perforation by duodenobiliar stent. Both cases were treated using the Hartman operation.

• MeSH
• colon sigmoideum zranění   MeSH
• duodenum MeSH
• lidé středního věku MeSH
• lidé MeSH
• migrace cizích těles komplikace   MeSH
• perforace střeva etiologie   MeSH
• senioři MeSH
• stenty škodlivé účinky   MeSH
• žlučové ústrojí MeSH
• Check Tag
• lidé středního věku MeSH
• lidé MeSH
• mužské pohlaví MeSH
• senioři MeSH
• ženské pohlaví MeSH
• Publikační typ
• anglický abstrakt MeSH
• časopisecké články MeSH
• kazuistiky MeSH

INTRODUCTION: Complete circular endoscopic (submucosal) resection (CER) performed using the endoscopic submucosal dissection (ESD) technique is burdened with a high incidence of post-operative strictures in the esophagus. The most effective method of preventing them is not known so far; one of the possible methods is to prevent these strictures directly at the site of their formation by covering the defect with a stent. The aim of the study was to find a way to fix a selected biomaterial to a stent, and subsequently, to fix the stent at the CER site to prevent esophageal strictures in an animal model. METHOD: Miniature piglets from the Czech Academy of Sciences breeding unit in Libechov (N=10) were used. Endoscopy was performed using a single-channel endoscope. First, we made two circular mucosal cuts spaced 5 cm apart in the middle esophagus and we performed the CER between them using the endoscopic submucosal dissection technique. After that, we covered the defect with a stent coated with biomaterial (Xe-Derma®) while we tried to prevent stent migration into the stomach. For stent fixation, we tested endo-clips (N=3), the Apollo endoscopic system (N=1) and the suspension technique using two polyamide threads (N=6) anchored in the nasal septum. We performed a control endoscopy, stent removal and subsequent autopsy after 12 weeks. RESULTS: All procedures were completed successfully without serious complications or deaths. Although stents covered with Xe-Derma® were applied to the entire resection area, one case of mediastinitis and one paraesophageal abscess were found during autopsy, most likely due to microperforations caused during the procedure. Histological analysis showed that after contact with the biomaterial, re-epithelisation took place within one week of application to the resection area. Stent migration occurred in each case when the stent was attached to the esophageal wall by endo-clips or with the endoscopic suture system (Apollo). There was no stent dislocation in the cases where the stent was suspended by two polyamide threads. CONCLUSION: We developed a technique of fixing biomaterial to the surface of metallic stents which we used to prevent the formation of esophageal strictures after CER. Distal suspension fixation of the stent with a polyamide thread proved to be the most effective, while fixations by endo-clips or with the endoscopic suture system were ineffective.Key words: benign esophageal strictures circular endoscopic resection endoscopic submucosal dissection complication prevention.

• MeSH
• biokompatibilní materiály MeSH
• ezofágoskopie * přístrojové vybavení   metody   MeSH
• ezofágus MeSH
• modely u zvířat MeSH
• nádory jícnu * chirurgie   MeSH
• stenty * MeSH
• zvířata MeSH
• Check Tag
• zvířata MeSH
• Publikační typ
• časopisecké články MeSH
• Názvy látek
• biokompatibilní materiály MeSH

PURPOSE: To describe an esophageal stent with a polyester mesh cover and an antireflux valve, and to assess its efficacy in the treatment of patients with inoperable tumors of the gastric cardia. MATERIALS AND METHODS: Thirteen patients with adenocarcinoma of the cardia, two patients with squamous cell carcinoma, and three patients with recurrent carcinoma of the gastric fundus after surgery were treated by placement of an esophageal stent with an antireflux valve. The spiral Z stent has a porous, polyester mesh cover and an antireflux sleeve made of pliable polyurethane at its lower end. RESULTS: Placement of the stent was successful in all patients, and their dysphagia disappeared or significantly improved. All were able to swallow solid food, and no patient reported significant reflux or "gas bloat" syndrome prior to death or the end of follow-up. Two patients only complained of minor heartburn. Follow-up barium swallow studies showed the absence of significant gastroesophageal reflux in all patients. No stent migration occurred. CONCLUSION: The esophageal stent with antireflux valve has been effective in the treatment of malignant obstruction of the cardia and allowed good esophageal passage without migration and major gastroesophageal reflux.

• MeSH
• adenokarcinom terapie   MeSH
• aplikace orální MeSH
• chirurgické síťky MeSH
• design vybavení MeSH
• gastroezofageální reflux diagnostické zobrazování   prevence a kontrola   MeSH
• karcinom terapie   MeSH
• kardie MeSH
• kontrastní látky aplikace a dávkování   MeSH
• lidé středního věku MeSH
• lidé MeSH
• lokální recidiva nádoru terapie   MeSH
• nádory žaludku terapie   MeSH
• následné studie MeSH
• ohebnost (fyzika) MeSH
• polyestery MeSH
• polykání fyziologie   MeSH
• polyurethany MeSH
• poréznost MeSH
• poruchy polykání terapie   MeSH
• pyróza etiologie   MeSH
• radiografie MeSH
• senioři nad 80 let MeSH
• senioři MeSH
• síran barnatý aplikace a dávkování   MeSH
• spinocelulární karcinom terapie   MeSH
• stenty * MeSH
• žaludeční fundus MeSH
• Check Tag
• lidé středního věku MeSH
• lidé MeSH
• mužské pohlaví MeSH
• senioři nad 80 let MeSH
• senioři MeSH
• ženské pohlaví MeSH
• Publikační typ
• časopisecké články MeSH
• Názvy látek
• kontrastní látky MeSH
• polyestery MeSH
• polyurethany MeSH
• síran barnatý MeSH

PURPOSE: This study was designed to evaluate our experience with the treatment of postoperative anastomotic leaks and benign esophageal perforations with covered biodegradable stents. MATERIALS AND METHODS: From 2008 to 2010, we treated five men with either an anastomotic leak or benign esophageal perforation by implanting of covered biodegradable Ella-BD stents. The average age of the patients was 60 (range, 38-74) years. Postoperative anastomotic leaks were treated in four patients (1 after esophagectomy, 1 after resection of diverticulum, 2 after gastrectomy). In one patient, perforation occurred as a complication of the treatment of an esophageal rupture (which occurred during a balloon dilatation of benign stenosis) with a metallic stent. RESULTS: Seven covered biodegradable stents were implanted in five patients. Primary technical success was 100%. Clinical success (leak sealing) was achieved in four of the five patients (80%). Stent migration occurred in three patients. In two of these patients, the leak had been sealed by the time of stent migration, therefore no reintervention was necessary. In one patient an additional stent had to be implanted. CONCLUSION: The use of biodegradable covered stents for the treatment of anastomotic leaks or esophageal perforations is technically feasible and safe. The initial results are promising; however, larger number of patients will be required to evaluate the capability of these biodegradable stents in the future. The use of biodegradable material for coverage of the stent is essential.

• MeSH
• biokompatibilní potahované materiály MeSH
• dospělí MeSH
• lidé středního věku MeSH
• lidé MeSH
• netěsnost anastomózy diagnostické zobrazování   terapie   MeSH
• perforace jícnu diagnostické zobrazování   terapie   MeSH
• pooperační komplikace diagnostické zobrazování   terapie   MeSH
• protézy - design MeSH
• radiografie MeSH
• senioři MeSH
• stenty * MeSH
• vstřebatelné implantáty * MeSH
• výsledek terapie MeSH
• Check Tag
• dospělí MeSH
• lidé středního věku MeSH
• lidé MeSH
• mužské pohlaví MeSH
• senioři MeSH
• Publikační typ
• časopisecké články MeSH
• práce podpořená grantem MeSH
• Názvy látek
• biokompatibilní potahované materiály MeSH

PURPOSE: Evaluation of 6-year results of abdominal aortic aneurysm (AAA) treatment by Ella stent-grafts with regard to safety and effectivity in relation to morphology of the aneurysm. METHODS: From a group of 172 patients with AAA, in whom elective endovascular treatment was considered, 120 of them (69.8%) were found to be suitable for this type of therapy. The bifurcated type of stent-graft was implanted in 97 patients, uniiliacal type in 19 patients and only four patients were found to be suitable for tubular type of stent-graft. Additional necessary procedures (internal iliac artery occlusion or contralateral common iliac artery occlusion in a group of patients with uniiliacal type of stent-graft) were performed surgically during the stent-graft implantation. CT and US controls were performed at 3, 6 and 12 months after implantation, later every 12 months. RESULTS: Primary technical success was achieved in 109 of the 120 patients (91%). Primary endoleak was recorded in 11 patients (primary endoleak type Ia in seven patients, type Ib in three patients and type IIIa in one patient). Assisted technical success after reintervention or spontaneous seal was 98.3%. Surgical conversion was indicated in two patients (1.7%). Perioperative mortality rate was 3.3%. Total average follow-up period was 20.7 months (range from 2 to 60 months). In nine patients (7.5%) secondary endoleak type II was found at control CT or US, in three patients partial thrombosis of the stent-graft was found. There was no aneurysm rupture during follow-up. CONCLUSION: Treatment of AAA with Ella stent-graft system is effective and safe. Bifurcated stent-graft is the most frequently used type. Uniiliacal type of stent-graft is used by us only in cases of complicated morphology.

• MeSH
• aneurysma břišní aorty diagnostické zobrazování   chirurgie   MeSH
• arteria iliaca chirurgie   MeSH
• arteriální okluzní nemoci chirurgie   MeSH
• bezpečnost MeSH
• cévní protézy * MeSH
• cévy - implantace protéz MeSH
• lidé středního věku MeSH
• lidé MeSH
• míra přežití MeSH
• následné studie MeSH
• onemocnění periferních cév chirurgie   MeSH
• počítačová rentgenová tomografie MeSH
• pooperační komplikace MeSH
• protézy - design MeSH
• reoperace MeSH
• retrospektivní studie MeSH
• selhání protézy MeSH
• senioři nad 80 let MeSH
• senioři MeSH
• stenty * MeSH
• trombóza etiologie   MeSH
• ultrasonografie MeSH
• výsledek terapie MeSH
• Check Tag
• lidé středního věku MeSH
• lidé MeSH
• mužské pohlaví MeSH
• senioři nad 80 let MeSH
• senioři MeSH
• ženské pohlaví MeSH
• Publikační typ
• časopisecké články MeSH