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  • Articles: DFG German National Licenses  (7)
  • Esophageal cancer  (7)
  • 1
    ISSN: 1432-0460
    Keywords: Esophageal cancer ; Transthoracic esophagectomy ; Mediastinal lymphadenectomy ; Delayed reconstruction ; Blunt esophageal dissection
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract In 82 consecutive patients with esophageal cancer (90% squamous cell carcinoma, 10% adenocarcinoma) transthoracic “en bloc” esophagotomy with regional lymphadenectomy was performed. The reconstruction with gastric interposition was carried out with delayed urgency in a second operation 48–72 h after the initial procedure. The results of this group were compared to a group of 65 patients who had transmediastinal esophagectomy without thoractotomy and mediastinal as well as suprapancreatic lymphadenectomy and immediate reconstruction by gastric interposition. The number of postoperative risk situations concerning cardiopulmonary features were comparable in both groups. The 30-day mortality rate and postoperative morbidity was not significantly different between both patient groups (mortality rate: transthoracic: 6.6%, transmediastinal: 7.7%). The advantages of a 2-stage procedure are that esophagectomy and especially mediastinal lymphadenectomy can be performed precisely without time pressure. After 2 days the stomach is hypotonic and dilated as a result of truncal vagotomy and can easily be elevated to the neck. The interval of 48–72 hours was chosen because the postoperative right-to-left shunt has nearly normalized after this time period. En bloc esophagectomy and reconstruction with delayed urgency can be performed without disadvantages compared to a 1-stage procedure. It can especially be recommended for operations in which esophagectomy and mediastinal lymphadenectomy are difficult and wearisome.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1433-0385
    Keywords: Key words: Staging ; Esophageal cancer ; Gastric cancer ; Colon cancer ; Rectum cancer ; Diagnostic imaging ; Endoscopy ; Endoscopic ultrasound ; Surgical resection ; Multimodal therapy. ; Schlüsselwörter: Staging ; Oesophaguscarcinom ; Kardiacarcinom ; Magencarcinom ; Coloncarcinom ; Rectumcarcinom ; bildgebende Diagnostik ; Endoskopie ; endoskopischer Ultraschall ; chirurgische Therapie ; multimodale Therapie.
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung. In Anbetracht der sich erweiternden therapeutischen Möglichkeiten bei gastrointestinalen Tumoren ist es auch zu einer Verfeinerung der prätherapeutischen Diagnostik gekommen. Allerdings ist die Diagnostik in Kliniken, in denen nicht das gesamte Spektrum der verfügbaren therapeutischen Möglichkeiten ausgeschöpft wird, eine sehr viel straffere und allein auf die chirurgische Therapie konzentrierte. Grundsätzlich ist die Erfassung der Wandinfiltrationstiefe, d. h. der T-Kategorie wichtig, weil alleine aufgrund der Festlegung dieser Kategorie wichtige weitere diagnostische und therapeutische Konsequenzen abzuleiten sind. Dies ist heute mittels Endoskopie und endoskopischem Ultraschall mit hoher Genauigkeit möglich. Wenig fortgeschrittene Tumoren (T1/2) stellen in aller Regel eine primär chirurgische Indikation dar. Lokal fortgeschrittene Tumoren (T3/4) müssen in Hinblick auf die Indikation zur multimodalen Therapie überprüft werden. Der direkte Nachweis von Lymphknotenmetastasen ist immer noch unbefriedigend. Aus dem angenommenen nodulären Status sollten deswegen keine wesentlichen therapeutischen Konsequenzen gezogen werden. Immer ist jedoch die Suche nach Fernmetastasen erforderlich, da beim Nachweis von Fernmetastasen nur eine palliative Therapie in Frage kommt. Neben der Erfassung des Tumorstadiums tritt mehr und mehr die bioptisch-histologische Detailbeurteilung des Tumors in den Vordergrund. Dadurch werden nicht nur wichtige und therapeutisch relevante Informationen zum Grading möglich, wir stehen darüber hinaus am Beginn einer modernen molekularen Diagnostik. Es steht zu erwarten, daß in absehbarer Zeit eine Fülle weiterer Informationen mit prognostischer Relevanz aus endoskopisch gewonnenen Biopsien erhalten werden können, die im Hinblick auf therapeutische Konsequenzen überprüft werden müssen.
    Notes: Summary. The increasing spectrum of therapeutic options for tumors of the gastrointestinal tract has resulted in a refinement of the pretherapeutic diagnostic strategies. The diagnostic approach in surgical institutions that are focused on primary surgical resection will therefore be much less sophisticated than in institutions who propose a selective therapeutic approach based on the pretherapeutic tumor stage and prognostic parameters. Pretherapeutic assessment of the depth of tumor infiltration, i. e. the T-category, is essential because most further diagnostic and therapeutic decisions are based on this information. This can today be achieved with a high degree of accuracy by endoscopy and endoscopic ultrasonography. Early T-stages (T1–2) are usually an indication for primary surgical resection and, after exclusion of distant metastases, no further diagnostic studies are required. In patients with locally advanced esophageal, gastric or rectum tumors (T3–4) multimodal therapeutic concepts should be considered. This usually requires additional diagnostic studies. None of the available diagnostic imaging modalities today allows satisfactory pretherapeutic assessment of lymph node metastases. The assumed nodular status should therefore currently not influence therapeutic decisions. Essential is, however, the assessment of distant metastases, since the documentation of distant tumor spread will change the therapeutic approach to a palliative situation. Detailed histologic and molecular-biologic assessment of tumor characteristics is growing in importance. This not only provides therapeutically relevant information regarding tumor grading, but opens the door towards a modern molecular diagnostic approach. It can be expected that in the near future a vast amount of relevant prognostic information can be obtained from endoscopic tumor biopsies, which may soon alter our therapeutic concepts.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Der Chirurg 67 (1996), S. 877-888 
    ISSN: 1433-0385
    Keywords: Key words: Lymph node dissection ; Lymphadenectomy ; Esophageal cancer ; Cancer of the cardia ; Gastric cancer. ; Schlüsselwörter: Oesophaguscarcinom ; Kardiacarcinom ; Magencarcinom ; Lymphadenektomie.
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung. Bei den Tumoren des oberen Gastrointestinaltrakts ist wie auch bei allen anderen Tumoren das Erreichen der Residualtumorfreiheit wichtigstes Operationsziel. Dazu muß nicht nur der Primärtumor in allen 3 Dimensionen mit adäquatem Sicherheitsabstand entfernt werden, das gleiche Ziel muß auch im Bereich der Lymphabflußwege erreicht werden. Dazu müssen befallene Lymphknoten und Lymphknoten mit sog. „microinvolvement“ entfernt werden. Im Minimum ist hierfür eine Lymphadenektomie der zwei tumornahen Compartmente (D2-Lymphadenektomie) notwendig. Der notwendige Sicherheitsabstand der Lymphadenektomie kann über die sog. Lymphknoten-Ratio abgeschätzt werden. Dabei handelt es sich um das Verhältnis zwischen der Anzahl der chirurgisch entfernten Lymphknoten und der Anzahl der tumorbefallenen Lymphknoten. Die Prognose kann durch die Lymphadenektomie immer dann nachhaltig verbessert werden, wenn die Lymphknoten-Ratio kleiner als 0,2 ist. Diese Operationsziele sind zumindest bei beginnender Lymphknotenmetastasierung zu erreichen. Bei fortgeschrittener Lymphknotenmetastasierung kann die Lymphadenektomie nur zu einer Reduktion lokaler Rezidive beitragen. Beschränkt sich die Lymphadenektomie nur auf die operative Entfernung von Lymphknoten, geht sie mit keinem erhöhten Operationsrisiko einher. Diese grundsätzlichen therapeutischen Prinzipien gelten in gleicher Weise für das Oesophagus-, Kardia- und Magencarcinom.
    Notes: Summary. Similar to other tumor entities, complete tumor removal with an adequate safety margin in all three dimensions (the oral margin, the aboral margins and the tumor bed) must be the primary aim of any surgical approach to carcinoma of the upper gastrointestinal tract. The same goal has to be achieved in the area of the lymphatic drainage. All positive nodes and nodes with a so-called ’microinvolvement' have to be removed together with the primary tumor. The safety margin of lymphadenectomy can be estimated by the lymph node ratio, i. e. the ratio between the number of removed and positive nodes. Several studies have shown that for carcinoma of the upper gastrointestinal tract the prognosis can be improved markedly if the lymph node ratio is below 0.2. For tumors in the early phase of lymphatic metastasis this can be achieved by extensive lymph node dissection. In practice, this requires as a minimum a lymphadenectomy of compartments I and II of the tumor's lymphatic drainage (D2 lymphadenectomy). The individual compartments are determined by the embryogenesis of the affected organ and defined by the tumor location. In patients with advanced lymphatic metastases, lymphadenectomy does not improve the prognosis and can only result in a reduction of local recurrences. Lymphadenectomy does not increase the risk and morbidity of the surgical procedure, provided it is restricted to the removal of nodes. These basic principles of lymphadenectomy are valid for carcinomas of the esophagus, cardia and stomach.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Langenbeck's archives of surgery 375 (1990), S. 166-170 
    ISSN: 1435-2451
    Keywords: En-bloc esophagectomy ; Esophageal cancer ; Reconstruction
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung In einer prospektiven Studie wurde die einzeitige Speiseröhrenrekonstruktion mit der 4872 h nach Oesophagektomie durchgeführten verglichen. In beiden Gruppen (26/24 Patienten) wurde eine transthorakale en-bloc Oesophagektomie durchgeführt. Als weitere Vergleichsgruppe wurden 45 Patienten mit transmediastinaler Oesophagektomie and einzeitiger Rekonstruktion, die ebenfalls während der Studiendauer operiert wurden, herangezogen. Es ergaben sich in Hinblick auf postoperative Komplikationen (26,9%; 29,1%; 22,2%) and auf die postoperative 30-Tage-Letalität (0%; 4,1%; 2,1%) sowie die Kliniksletalität (3,2%; 4,1%; 4,2%) keinerlei Unterschiede. Somit führt die Rekonstruktion mit aufgeschobener Dringlichkeit zu keiner weiteren Risikoverminderung; andererseits stellt sie aber auch keine Risikoerhöhung dar, so daß sie in das Verfahrensspektrum der Oesophaguschirurgie aufgenommen werden kann.[/p]
    Notes: Summary In a prospective study direct reconstruction of the esophagus was compared to reconstruction 48–72 h after esophagectomy. In both groups (26/24) transthoracic en-bloc esophagectomy was performed. During the same time period of the study another group of 45 patients had transmediastinal esophagectomy and direct reconstruction and this group was also used as comparison. There were no differences concerning postoperative complications (26.9%; 29.1 %; 22.2%), postoperative 30-days mortality (0%; 4.1%; 2.1%), and hospital mortality (3.2%; 4.1%; 4.2%). Thus reconstruction with delayed urgency does not lead to a further decrease of risk; on the other hand there is also no increase of risk and therefore it can be included in the spectrum of procedures of esophageal surgery.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Langenbeck's archives of surgery 372 (1987), S. 145-148 
    ISSN: 1435-2451
    Keywords: Esophageal cancer ; Perioperative chemotherapy ; Oesophaguscarcinom ; Perioperative Chemotherapie
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Für die Mehrzahl der Patienten mit Oesophaguscarcinom sind lokale Tumorinfiltrationen und/oder Fernmetastasen bei der Diagnosestellung für die ungünstige Prognose verantwortlich zu machen. Zu deren Verbesserung werden zusätzliche Therapiemodalitäten - Chemotherapie allein oder in Kombination mit simultaner Strahlentherapie — perioperativ eingesetzt. Trotz einer möglichen Steigerung der Resektionsrate fehlen bisher überzeugende Ergebnisse, die angesichts der gesteigerten Toxizität einen Einsatz dieser multimodalen Therapiestrategien ausserhalb von kontrollierten Studien erlauben.
    Notes: Summary In the majority of patients with esophageal cancer local tumor infiltration and/or distant metastases are responsible for the poor prognosis. Therefore to improve life expectancy additional modalities - chemotherapy alone or in combination with simultaneous radiation - have been introduced perioperatively. In spite of a possible increase of resectability convincing data are lacking which could argue for an uncontrolled introduction of the neoadjuvant approach outside investigational studies.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    Langenbeck's archives of surgery 373 (1988), S. 367-376 
    ISSN: 1435-2451
    Keywords: Esophageal cancer ; En bloc esophagectomy ; Mediastinal lymphadenectomy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Die en-bloc Oesophagektomie erfaßt neben der Entfernung der Speiseröhre die mediastinale Lymphadenektomie incl. der Resektion von V. azygos und Ductus thoracicus. Zusätzlich beinhaltet sie die suprapankreatische abdominelle Lymphadenektomie und bei oberhalb der Trachealbifurkation gelegenen Tumoren auch die cervicale Lymphadenektomie. Die Operationstechnik kann als ausgereift und standardisiert angesehen werden. Mögliche Komplikationen sind Nachblutungen (3,3%), Chylothorax (1,6%) und Trachealäsionen (4,9%). Die Letalität liegt in erfahrenen Zentren unter 10%, im eigenen Krankengut bei 6,6%. Die en-bloc Oesophagektomie ermöglicht ein exaktes Staging des Oesophaguscarcinoms, führt in einem hohen Prozentsatz zur kompletten Tumorentfernung (R0-Resektion) und scheint die Prognose früher Tumorstadien (T1/2 N0/1) zu verbessern.
    Notes: Summary En-bloc esophagectomy not only comprises the elimination of the esophagus but also the mediastinal lymphadenectomy and the resection of the azygos vein and thoracic duct. Additionally the suprapancreatic abdominal lymphadenectomy is included and in tumors located orally of the tracheal bifurcation also the cervical lymphadenectomy. The surgical technique can be estimated as fully developed and standardized. Possible complications are postoperative hemorrhage (3.3%), chylothorax (1.6%) and tracheal lesions (4.9%). The mortality rate ranges under 10% in experienced centers, in our own patients around 6.6%. With en-bloc esophagectomy an exact staging of esophageal cancer becomes possible. In a high percentage complete tumor elimination (R0-resection) can be achieved and it seems that herewith prognosis in early tumor stages (T1/2 N0/1) can be improved.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Springer
    Langenbeck's archives of surgery 384 (1999), S. 141-148 
    ISSN: 1435-2451
    Keywords: Key words Lymph-node dissection ; Lymphadenectomy ; Esophageal cancer
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract A complete tumor removal with an adequate safety margin in all three dimensions (the oral margin, the aboral margins and the tumor bed) must be the primary aim of any surgical approach to esophageal cancer. The same goal has to be achieved in the area of the lymphatic drainage. The safety margin of lymphadenectomy can be estimated by the so-called lymph-node ratio, i.e., the ratio between the number of positive nodes and removed nodes. Several studies have shown that, for esophageal carcinoma, a lymph-node ratio below 0.2 constitutes an independent prognostic factor. Although controlled trials are still lacking, these data suggest that extensive lymphadenectomy may thus improve the prognosis in patients at an early stage of lymphatic spread, i.e., patients with only lymph-node `micro-involvement' or patients with a limited number of positive regional nodes on standard histopathologic assessment. In practice, this requires, as a minimum, a two-field lymphadenectomy. In patients with more advanced lymphatic metastases, two-field lymphadenectomy does not improve the prognosis and can only result in a reduction of local recurrences. A more extensive lymphadenectomy, i.e., three-field lymph-node dissection, increases the risk and morbidity of the surgical procedure, while a prognostic gain, if any, appears to be limited to a subgroup of patients with proximal tumors and less than five involved lymph nodes. Since, in the Western world, these patients are usually submitted to multimodal therapeutic protocols, extended three-field lymphadenectomy can currently not be recommended as standard therapy.
    Type of Medium: Electronic Resource
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