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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    European radiology 10 (2000), S. 802-805 
    ISSN: 1432-1084
    Keywords: Key words: Gastrointestinal bleeding ; Embolization ; Interventional therapy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract. Retrospective evaluation of interventional embolization therapy in the treatment of gastrointestinal hemorrhage over a long-term observation period from 1989 to 1997. Included in the study were 35 patients (age range 18–89 years) with gastrointestinal bleeding (GI) referred for radiological intervention either primarily or following unsuccessful endoscopy or surgery. Sources of GI bleeding included gastric and duodenal ulcers (n = 7), diverticula (n = 3), erosion of the intestinal wall secondary to malignancy (n = 6), vascular malformations (n = 4), and hemorrhoids (n = 2), as well as from postoperative (n = 6), posttraumatic (n = 2), postinflammatory (n = 4) or unknown (n = 1) causes. Ethibloc (12 cases) or metal coils (14 cases) were predominantly used as embolisates. In addition, combinations of tissue adhesive and gelfoam particles and of coils and Ethibloc were used (six cases). Finally, polyvinyl alcohol particles, a coated stent, and an arterial wire dissection were utilized in one case each. Bleeding was stopped completely in 29 of 35 cases (83 %). In one case (3 %) the source of bleeding was recognized but the corresponding vessel could not be catheterized. In five other cases (14 %) there was partial success with reduced, though still persistent, bleeding. The rate of complications was 14 %, including four instances of intestinal ischemia with fatal outcome in the first years, and, later, one partial infarction of the spleen without serious consequences. Gastrointestinal hemorrhage can be controlled in a high percentage of patients, including the seriously ill and those who had previously undergone surgery, with the use of minimally invasive interventional techniques. The availability of minicoils instead of fluid embolization agents has reduced the risk of serious complications.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1432-1084
    Keywords: Key words: Hepatic artery embolization
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract. A retrospective evaluation of embolotherapy in patients with arterial liver hemorrhages was carried out. Twenty-six patients, ranging in age from 10 days to 77 years with active arterial liver hemorrhages, underwent non-surgical embolotherapy. Bleeding was attributed to trauma (n = 21), tumor (n = 3), pancreatitis (n = 1), or unknown cause (n = 1). Twenty-nine embolizations were performed via a transfemoral (n = 26) or biliary (n = 2) approach. One bare Wallstent was placed into the common hepatic artery via to an axillary route to cover a false aneurysm due to pancreatitis. Treatment was controlled in 4 patients by cholangioscopy (n = 2) or by intravascular ultrasound (n = 2). Prior surgery had failed in 3 patients. Intervention controlled the hemorrhage in 24 of 26 (92 %) patients within 24 h. Embolotherapy failed in 1 patient with pancreatic carcinoma and occlusion of the portal vein. In 1 patient with an aneurysm of the hepatic artery treated by Wallstent insertion, total occlusion was not achieved in the following days, as demonstrated by CT and angiography. However, colour Doppler flow examination showed no flow in the aneurysm 6 months later. Complications were one liver abscess, treated successfully by percutaneous drainage for 10 days, and one gallbladder necrosis after superselective embolization of the cystic artery. Embolization is a effective tool with a low complication rate in the treatment of liver artery hemorrhage, even in patients in whom surgery has failed.
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 1432-1084
    Keywords: Abdominal lymph nodes ; Computed tomography ; Thorotrast
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The formerly used contrast medium Thorotrast is stored in liver (60%), spleen (30%) and their regional lymph nodes. CT scans of 22 Thorotrast patients were reviewed regarding the evaluation of the abdominal lymph nodes. Due to the high density of Thorptrast-accumulating lymph nodes (〉 500 HU) and the excellen contrast sensitivity of CT, lymph nodes less that 0.4 cm in diameter can be imaged. In all more that 1300 lymph nodes could be detected (mean 63 ± 24 per patient). The goal of the study was to describe the normal topographic anatomy of the reginal lymph nodes of liver and spleen, which can not be visualised by bipedal lymphography.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    135 Bedford Road, PO Box 418 , Armonk , NY 10504-0418 USA . : Blackwell Science Inc
    Journal of cardiac surgery 18 (2003), S. 0 
    ISSN: 1540-8191
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Abstract  Purpose: The purpose is to present results of endovascular exclusion (stent-graft treatment) of aneurysms of the descending thoracic aorta both in elective cases and in emergencies. Methods: Indications for stent-graft treatment were dependent on multislice angio-CT evaluation revealing a proximal neck of at least 10 mm between the left common carotid artery and the onset of aneurysm. All stent grafts were inserted in the operating room; 43 transfemoral, 2 transiliac. The stent grafts used were Corvita, Stenford, Vanguard, AneuRx, Talent, and Excluder. Deployment was achieved under fluoroscopic control, endoleaks were checked for with D S A on the operating table and postoperatively by angio-CT. Long-term follow-up consisted of evaluation with angio-CT after 6 and 12 months, and from there on once a year and with plain chest X-rays. Follow-up was achieved in all patients. Results: Mean follow-up is 21 months (1–66); 30-day mortality is 3/45, no permanent neurologic deficit. Thirty patients were treated electively, 15 with contained rupture. Left subclavian artery overstenting proved to be necessary in 12 patients for proper proximal sealing of the aneurysm, type I endoleaks were observed in 10 patients, one early conversion, 7 proximal extension cuffs, one sealed spontaneously, one still at risk. Among patients where LSA had been overstented only one wanted a transposition, all others did well without left-hand ischemia or subclavian steal syndrome. Conclusion: Endovascular treatment is less invasive and has reasonable mortality and morbidity but is limited to well-defined morphologies. Mid-term results are promising but it has to be observed whether these will translate into long-term durability. (J Card Surg 2003; 18:367-374)
    Type of Medium: Electronic Resource
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  • 5
    ISSN: 1432-1084
    Keywords: Key words: Papilloma ; Breast ; MRM ; Galactography
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract. The aim of this study was evaluation of MRI alone and in combination with mammography and galactography in the diagnosis of intraductal papillomas. From 1994 to 1998, a total of 48 women presenting with pathologic mammary secretion underwent galactography and magnetic resonance mammography (MRM). Thirty-five patients aged 16–71 years (average age 46 years) subsequently underwent surgery or diagnostic puncture and the histologic findings were compared with the results of the radiologic examination. Histology revealed papillomas in 16 cases. In 6 of these patients, there was associated malignant degeneration. Malignancy without associated papilloma was observed in 3 cases. Galactography displayed a sensitivity of 94 % and a specificity of 79 % with five false-positive findings and one false-negative finding in the recognition of intraductal papillomas. Malignant processes were detected by mammography/galactography in only one instance. Magnetic resonance mammography visualized pathologic contrast medium uptake in 8 of 9 cases of malignant disease (sensitivity 89 %). One patient with in situ ductal carcinoma escaped detection with MRM. Papillomas showed no or below-the-threshold-lying contrast uptakes with no specific sign suggestive of papilloma. Galactography in combination with mammography remains the primary diagnostic procedure in cases of pathologic mammary secretion or suspected papilloma. The addition of MRI permits exclusion of malignant disease with a high degree of certainty; thus, expectant management in individual cases with negative findings appears justified.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    Gefässchirurgie 5 (2000), S. 77-85 
    ISSN: 1434-3932
    Keywords: Schlüsselwörter  Akute Ischämie ; mechanische Thrombektomie ; Akuter Gefäßverschluß ; Endovaskuläre Verfahren ; Key words Acute ischaemia ; Mechanical thrombectomy ; acute vascular occlusion ; Endovascular methods
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Abstract  The therapy of limb-threatening ischaemia is still a matter of controversy . The aim of this retrospective study was to determine whether the transcutaneous approach is an alternative to open surgery. We investigated and compared surgical and percutaneous interventional methods in the treatment of both embolic and thrombotic vascular occlusions in patients with pre-existing arteriosclerotic disease with the aim of establishingtherapy guidelines for the therapy of acute limb ischaemia. From 1994 to 1997, a total of 197 patients with acute limb ischaemia were treated. Of 80 patients with embolic occlusions, 23 (28.8%) were treated using percutaneous interventional methods, while the remaining 57 (71.2%) underwent surgery. There was no significant difference in the rate of limb salvage between the groups treated using the transcutaneous approach (86%) and open surgery (88%). In 117 patients with thrombotic occlusions and pre-existing arteriovascular disease, percutaneous treatment was successful in 61% of the 38 patients selected for percutaneous treatment and in 62% of patients undergoing surgery. Another 26 patients underwent additional interventional measures intraoperatively. The rate of limb salvage was 62% for the surgical group as a whole. Percutaneous mechanical thrombectomy represents a viable therapeutic alternative to surgical or surgical-interventional modalities, particularly in those patients with occlusions consisting of soft, embolic material and in those with occlusions occurring in infrapopliteal vessels. An interdisciplinary approach to defining the indications for each of these methods should be taken based on the individual patient’s clinical and angiographic findings. Additional intraoperative endovascular procedures increase the range of therapeutic options and permit optimal revascularization of vessels both proximal and distal to the site of occlusion.
    Notes: Zusammenfassung   Die Vorgehensweise zur Erhaltung der ischämisch bedrohten Extremität wird nach wie vor kontrovers diskutiert. In dieser Arbeit sollte untersucht werden, ob das perkutan-interventionelle Vorgehen eine Alternative zur chirurgischen Vorgehensweise bietet. In einer retrospektiven Studie wurden das chirurgisch-interventionelle und das perkutan interventionelle Vorgehen bei rein embolischen und bei thromboembolischen Verschlüssen mit vorbestehenden arteriosklerotischen Veränderungen miteinander verglichen und versucht, Therapieleitlinien für das Vorgehen bei der Behandlung der akuten Extremitätenischämie zu erstellen. 1994–1996 wurden 197 Patienten mit akuter Ischämie behandelt. Von insgesamt 80 Patienten mit embolischen Verschlüssen wurden 23 perkutan interventionell und 57 chirurgisch behandelt. Die Beinerhaltungsrate zeigte keinen wesentlichen Unterschied zwischen dem transkutanen Vorgehen (86%) und der chirurgischen Therapie (88%). Bei 117 thromboembolischen Verschlüssen mit vorbestehender arterieller Verschlußkrankheit konnten von 38 perkutan interventionell Behandelten 61% erfolgreich therapiert werden, durch rein chirurgisches Vorgehen 62%. Weitere 26 Patienten erhielten intraoperativ zusätzliche interventionelle Maßnahmen. Dadurch wurde in 62% der Fälle die amputationsgefährdete Extremität erhalten. Die perkutane mechanische Thrombektomie stellt besonders bei weichem, embolischem Verschlußmaterial sowie im infrapoplitealen Bereich eine Therapiealternative zum chirurgischen bzw. chirurgisch-endovaskulären Vorgehen dar. Die interdisziplinäre Indikationsstellung zur jeweiligen Verfahrenswahl sollte sich speziell am klinischen und ggf. am angiographischen Befund des einzelnen Patienten orientieren. Zusätzliche intraoperative endovasku-läre Therapieverfahren bieten die Möglichkeit eines erweiterten Aktionsradius und ermöglichen das gezielte Vorgehen sowohl im Zustrom- als auch im Abstromgebiet. UnsereErgebnisse haben klar gezeigt, daß auch die chirurgische Vorgehensweise sowohl beim embolischen wie insbesondere beim thrombotischen Verschluß alle interventionellen Maßnahmen zur Anwendung bereithalten muß.
    Type of Medium: Electronic Resource
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  • 7
    ISSN: 1434-3932
    Keywords: Schlüsselwörter Endovaskuläre Operationen ; Stents ; Aortenstentprothese ; Bauchaortenaneurysma ; Komplikationen ; Keywords Endovascular surgery ; Stents ; Aortic stent prostheses ; Aneurysm ; Abdominal aorta ; Complications
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Abstract  Intraoperative complications can be divided into three categories on the basis of the time of their occurrence: Group I – Problems associated with access; group II: introduction of the endovascular stent (a: release of the main segment, b: anchoring the second limb); and group III: incidence of primary endoleaks. The objective of the present study was to describe the management of these complications. In a group of 130 patients undergoing endovascular treatment of aneurysms of the abdominal aorta, a total of 31 complications occurred in 26 patients (20.0%). The most frequently encountered complication in each group and its respective management was as follows: Group I: Correction was performed using dilatation and retroperitoneal stretching as well as surgical shortening of the external iliac artery with interposition; group IIa: overstenting the renal arteries was corrected either by conversion or tugging at the endograft; group IIb: the guide wire or docking system could not be placed. Such cases were managed either through conversion or use of fresh systems; group III: such complications were treated with repeated stent placement, postoperative coil embolizations, or conversion. The endovascular therapy of aortic aneurysms is associated with intraoperative complications in 20% of cases. Adequate management helps to keep both morbidity and mortality rates low.
    Notes: Zusammenfassung  Intraoperative Komplikationen können je nach Zeitpunkt des Ereignisses in 3 Gruppen definiert werden: Gruppe I – Zugangsprobleme, Gruppe II – Einbringen des endovaskulären Stents (a: Absetzen des Hauptteils, b: Andocken des 2. Schenkels), Gruppe III – Inzidenz primärer Endoleaks. Zielsetzung dieser retrospektiven Studie war es, das Management zur Behebung dieser Komplikationen darzustellen. Von 130 Patienten mit endovaskulärer Ausschaltung eines Aortenaneurysmas traten bei 26 Patienten 31 intraoperative Komplikationen auf (20,0%). Die führenden Komplikationen in jeder Gruppe sowie das daraus resultierende Management waren: Gruppe I: Die Korrektur erfolgte durch Dilatation, retroperitoneale Streckung, Kürzungsoperation der A. iliaca externa und Interponat. Gruppe II a: Bei Überstentung der Nierenarterien erfolgte die Konversion oder Zug am Endograft. Gruppe II b: Führungsdraht oder Andocksystem können nicht platziert werden. Die Behebung erfolgte durch Konversion und Anwendung neuer Systeme. Gruppe III: Hier wurden erneute Stentplazierungen, postoperativer Coil-Embolisationen und Konversionen durchgeführt. Die endovaskuläre Therapie aortaler Aneurysmen birgt eine Rate intraoperativer Schwierigkeiten von 20%. In 3,8% der Fälle musste eine Konversion durchgeführt werden. Durch adäquates Management konnten die Letalität (1/26) und Morbidität jedoch gering gehalten werden.
    Type of Medium: Electronic Resource
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  • 8
    ISSN: 1432-2277
    Keywords: Arterial steal, in liver transplantation ; Liver transplantation, arterial steal ; Ischemia, in liver transplantation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Case reports of two patients with an unusual cause for a rapid increase in transaminases following liver transplantation are described. In the postoperative course, angiography revealed an arterial, hypoperfusion of the liver due to a steal phenomenon with blood shunting from the hepatic to the splenic artery. In one case, the underlying pathophysiology was a pre-existing filiform stenosis of the celiac trunk with insufficient recruitment of arterial blood from the superior mesenteric artery via the pancreatic arcade. Adequate liver perfusion was restored by simple ligation of the common hepatic artery. In the other case, angiography showed an arteriovenous fistula formation of the splenic vessels and minimal blood flow through the hepatic vessels. This was successfully corrected by angiographic embolization of the splenic artery with metal coils. After therapeutic intervention, both patients rapidly recovered with excellent liver function.
    Type of Medium: Electronic Resource
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  • 9
    ISSN: 1432-2102
    Keywords: Schlüsselwörter A. ischiadica ; Aneurysma ; Thrombolyse ; Angiographie ; Keywords Sciatic artery ; Aneurysm ; Thrombolysis ; Angiography ; Stentgraft
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Abstract The sciatic artery is a rarely seen variant of the vessels of the lower limb. Anatomically it is the prolongation of the inferior gluteal artery and accompanies the sciatic nerve from the sciatic foramen to the knee. More than other vessels, the sciatic artery shows vasculopathies like diffuse dilatation or aneurysms. This report describes an interesting case of embolic acute ischemia, caused by a persistent sciatic artery with an aneurysm. We treated the ischemia with intraA. l lysis and bridged the aneurysm with an covered stent.
    Notes: Zusammenfassung Die A. ischiadica ist eine selten zu findende anatomische Variante des Gefäßsystems der unteren Extremität. Anatomisch entspricht die A. ischiadica einer Verlängerung der A. glutea inferior und begleitet den N. ischiadicus ab dem Foramen ischiadicum bis zum Knie, wo sie in die Unterschenkelarterien mündet und zu den muskelversorgenden Arterien gehört. Die A. ischiadica neigt aufgrund eines minderwertigen Gefäßaufbaus zu Vaskulopathien. Insbesondere aneurysmale Dilatationen der A. ischiadica sind mit einer hohen Inzidenz beschrieben worden. Der vorliegende Fallbericht beschreibt den interessanten Fall einer akuten Ischämie im Bereich des Unterschenkels, ausgelöst durch Thromben aus einer aneurysmatisch veränderten A. ischiadica. Die akute Ischämie wurde erfolgreich durch eine intraarterielle Lyse behandelt. Das Aneurysma wurde sekundär durch eine beschichtete Stentprothese ausgeschaltet.
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Springer
    Der Radiologe 37 (1997), S. 177-179 
    ISSN: 1432-2102
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Type of Medium: Electronic Resource
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