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  • 1
    ISSN: 1439-099X
    Keywords: Schlüsselwörter: Akzelerierung ; Repopulierung ; randomisierte Studien ; Metaanalyse ; Key Words: Acceleration ; Repopulation ; Randomized trials ; Meta-analysis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Background and Method: The effect of overall treatment time on therapeutic outcome was analyzed comparing the randomized trials on accelerated fractionation for different tumor entities. Only studies using radiotherapy as the definitive locoregional treatment modality were included. Results and Conclusion: Randomized studies were performed for squamous cell carcinomas of the head and neck region as well as for small-cell and non-small-cell carcinomas of the lung. These studies showed, that locoregional control can be improved by accelerated fractionation in comparison to conventional fractionation with the same total dose. With the same antitumor effectiveness of both fractionation schedules, total dose can be reduced using accelerated fractionation.
    Notes: Fragestellung und Methodik: Zur Beantwortung der Frage nach dem Effekt der Gesamtbehandlungszeit der Strahlentherapie auf das Therapieergebnis bei verschiedenen Tumorentitäten wurden die randomisierten Studien zur akzelierten Fraktionierung vergleichend in einer Übersicht dargestellt. Es wurden nur Studien aufgenommen, bei denen die Strahlentherapie die definitive lokoregionale Therapie war. Ergebnisse und Schlussfolgerung: Sowohl bei den Plattenepithelkarzinomen der Kopf-Hals-Region als auch bei kleinzelligen und nichtkleinzelligen Bronchialkarzinomen liegen Studienergebnisse vor. Diese zeigen, dass bei konstanter Gesamtdosis im Vergleich zur konventionellen die lokoregionale Kontrolle durch akzelerierte Fraktionierung erhöht wird. Bei gleicher Effektivität beider Fraktionierungschemata gegen den Tumor kann die Gesamtdosis bei akzelerierte Fraktionierung reduziert werden.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1437-2320
    Keywords: Astrocytoma ; autopsy findings ; complications ; intramedullary neoplasm ; long-term results ; neutron therapy ; pilocytic astrocytoma ; spinal tumors ; surgical tumor therapy ; vertebral column
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Ten patients suffering from intramedullary pilocytic astrocytomas (WHO-classification: astrocytoma grade I) were investigated catamnesticly. Combined surgery and radiotherapy was performed. Seven patients received neutron irradiation postoperatively. In four cases the neurological symptoms were improved after follow-up periods ranging from 33 to 89 months. The three other patients died after 6 to 21 months. The autopsy findings of a 14 year old child are presented. Our results are compared with reports in the literature. In addition, long-term problems of the spinal column are discussed. It seems that the combined surgical and neutron therapy improves the prognosis of pencil gliomas.
    Type of Medium: Electronic Resource
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