106 research outputs found
Ist Weiterbildung Mehrwert?: Vortrag aus Anlass des 4. Deutschen Weiterbildungstages
Der 4. Deutsche Weiterbildungstag am 21. September 2012 stand unter dem Leitwort "Weiterbildung ist mehrWert". Mit dieser Schreibweise wollten die Veranstalter, darunter das Deutsche Institut für Erwachsenenbildung (DIE), zum Ausdruck bringen, dass von lernaktiven Menschen die gesamte Gesellschaft profitiert, Weiterbildung in diesem Sinne also einen "Mehrwert" hat. Andererseits schwingt eine zweite Bedeutung mit, nämlich dass Weiterbildung "mehr wert" ist und sie mehr öffentliche Anerkennung, Wahrnehmung und Mittelausstattung verdient als hierzulande üblich. Der Bildungsökonom und frühere Vorsitzende der Expertenkommission Finanzierung Lebenslangen Lernens hielt anlässlich des Weiterbildungstages im Deutschen Bundestag einen Fachvortrag zu dieser Thematik, den DIE Zeitschrift in leicht abgewandelter Form der Öffentlichkeit zugänglich macht. Ihn bewegt die Frage, in welchem Sinne Weiterbildung Mehrwerte schaffen kann
Protest fĂĽr bessere Bildung: Ist der Bologna-Prozess reformbedĂĽrftig?
Der im Jahr 1999 initiierte Bologna-Prozess sollte ein entscheidender Schritt zur Konstituierung eines europäischen Hochschulraumes sein. Ist die Reform gescheitert? Annette Schavan, Bundesministerin für Bildung und Forschung, betont, dass der Bologna-Prozess viele wichtige Veränderungen an den deutschen Hochschulen erfolgreich herbeigeführt und eine Angleichung der europäischen Hochschulsysteme ermöglicht hat. Allerdings seien auch Fehler zu konstatieren, etwa dort, wo der Stoff des Diplom- oder Magisterstudiums einfach in den Bachelor übertragen wurde. Ein anderer Mangel, der mit der Reform einherging, sei die unnötige Regelungsdichte. Doch nicht zuletzt durch den Protest der Studierenden sei in der Hochschullandschaft einiges in Bewegung gekommen. Für Dieter Timmermann, Rektor der Universität Bielefeld, ist eine Reform der Bologna-Reform dringend erforderlich. Er schlägt die Umsetzung des nordamerikanischen Modells vor, nämlich eines gestuften Studiensystems, welches im "Bachelorstudium die wissenschaftsbasierte Persönlichkeitsbildung", in den "professional schools" eine berufsorientierte wissenschaftliche Masterausbildung und in den "graduate schools" die Ausbildung von Doktoranden auf höchstem wissenschaftlichen Niveau zum Ziel hat. Wolfgang Heubisch, Bayerischer Staatsminister für Wissenschaft, Forschung und Kunst, sieht weder bei den Zielen noch bei dem Instrumentarium Reformbedarf. Es mangele aber an einer konsequenten Umsetzung des Instrumentariums auf europäischer und nationaler Ebene. Und auch Horst Hippler, Präsident des Karlsruher Instituts für Technologie, sieht Mängel in der Umsetzung der Reform.Bildungspolitik, Hochschulreform, Bildungsreform Studium, Studierende, Deutschland, Bologna-Prozess
Novel Technique of Craniospinal Axis Proton Therapy with the Spot-Scanning System: Avoidance of Patching Multiple Fields and Optimized Ventral Dose Distribution
Background and Purpose:: Conventional craniospinal irradiation (CSI) is a complex procedure carrying a high risk of adverse side effects. Still, it is indispensable for cure in a number of pediatric brain tumors. In this study, the feasibility and the potential advantage of spot-scanning proton therapy for CSI are investigated. Material and Methods:: A boy (5.5 years of age) with a recurrent medulloblastoma received CSI with a single posterior field using the spot-scanning system at Paul Scherrer Institute. Dose distribution to the targets and the organs at risk, treatment time, reproducibility of patient positioning, toxicity (according to EORTC/RTOG score), and treatment outcome were evaluated. Results:: The plan achieved a homogeneous coverage of the target volume, even using a single field. The doses to the organs ventral to the target were minimized. During treatment, grade 1 skin reaction and grade 2 central nervous system toxicity were observed. After 2 months, the boy presented with a transitory fatigue. After 24 months, he is alive and free of disease. Growth hormones and thyroid hormones are reduced. Conclusion:: These results, based on a single patient, suggest that spot-scanning proton therapy for craniospinal treatment is feasible and safe. By applying a single dorsal field, difficulties of multiple-field patching can be avoided and the ventral dose spread can be minimize
QOL-04. Histology, treatment, and extent of pretreatment hydrocephalus are major determents of neurocognitive outcome for survivors of pediatric posterior fossa tumors - report from the German HIT-studies [Abstract]
BACKGROUND: Cognitive impairments following pediatric brain tumors are generally attributed to tumor site, surgical intervention, complications as well as to nonsurgical treatment. We investigated impairments for patients with medulloblastoma (MB), ependymoma (EP) and low-grade glioma (LGG) of the cerebellum treated within the German pediatric brain tumor network to compare and rank major determents. PATIENTS+METHODS: Following protocol treatment, 245 patients with MB (n=106), EP (n=32), and cerebellar LGG (n=107, surgery only) were examined 2 + 5 years after diagnosis using the German “Neuropsychological-Basic-Diagnostic” (NBD) tool based on the Cattell-Horn-Carroll model for intelligence. Within this retrospective study, multiple linear regression models were applied. RESULTS: The MB+EP vs. LGG-cohort differed slightly in median age at diagnosis (8.7/6.1 years) and location (cerebellar hemispheres: 8%MB+EP/49.5%LGG), while sex-ratio, grade of resection, extent of pre-operative hydrocephalus were comparable. With smaller median tumor-volume in the MB+EP vs. LGG-cohort (34.1/44.1cm3), ranges broadly overlapped. Median scores of age-appropriate tests were in the lower normal range for all patients for fluid and crystallized intelligence, selective attention, visual-spatial processing (VSP) and verbal short-term memory (median=93-103), but distinctly below for processing speed (PS), and psychomotor speed abilities (PMS) (median=65-84). Higher doses of craniospinal irradiation (>23.4Gy/23.4Gy) resulted in lower scores for most domains for MB-patients compared to LGG-patients (e.g., PS-estimate: >23.4Gy:-27.71, p=0.026/23.4Gy:-9.93, p=0.286). EP-patients (surgery+54Gy local radiation) scored better than LGG-patients except for PS (estimate:-15.65, p=0.111). Impairments were accentuated with higher degrees of hydrocephalus (estimate:-7.64, p=0.103) in patients with incomplete resection (estimate:12.23, p=0.006) for PMS both hands. CONCLUSION: Following age-adapted comprehensive treatment, survivors of a cerebellar tumor show significant impairments of PMS abilities in our trials. Our data suggest that slow growing LGG impair neurocognitive development more than local radiotherapy for ependymoma, while craniospinal irradiation compromises VSP and PS in MB. Initial symptomatic intracranial pressure remains a strong predictor for general neuropsychological impairment
Evaluation of dose, volume, and outcome in children with localized, intracranial ependymoma treated with proton therapy within the prospective KiProReg Study
BACKGROUND: Radiotherapy (RT) of ependymoma in children is an important part of the interdisciplinary treatment concept. However, feasibility and dose concepts are still under investigation, particularly in very young children. The aim of this study was to evaluate the standard dose and volume of proton therapy (PT) in children with ependymoma. METHODS: In this analysis, 105 patients with localized, intracranial ependymoma under the age of 18 years treated with PT between 2013 and 2018 were included. Patient characteristics, treatment, outcome, and follow-up data were analyzed using descriptive statistics, Kaplan-Meier, and Cox regression analysis. RESULTS: The median age of patients at PT was 2.8 years (0.9-17.0 years). The molecular subgroup analysis was performed in a subset of 50 patients (37 EP-PFA, 2 EP-PFB, 7 EP-RELA, 2 EP-YAP, 2 NEC [not elsewhere classified]). The median total dose was 59.4 Gy (54.0-62.0 Gy). The median follow-up time was 1.9 years. The estimated 3-year overall survival (OS), local control (LC), and progression-free survival (PFS) rates were 93.7%, 74.1%, and 55.6%, respectively. Within univariable analysis, female gender and lower dose had a positive impact on OS, whereas age ≥4 years had a negative impact on OS and PT given after progression had a negative impact on PFS. In the multivariable analysis, multiple tumor surgeries were associated with lower PFS. New ≥3° late toxicities occurred in 11 patients. CONCLUSION: For children with localized ependymoma, PT was effective and well tolerable. Multiple surgeries showed a negative impact on PFS
Paediatric radiation therapy across Europe: A European questionnaire survey supported by the SIOPe, ESTRO, PROS and several national paediatric hematology-oncology societies (NAPHOS)
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Local and systemic therapy of recurrent medulloblastomas in children and adolescents: results of the P-HIT-REZ 2005 study
SIMPLE SUMMARY: A medulloblastoma recurrence is usually associated with an unfavorable prognosis. The German P-HIT-REZ 2005 Study gathered data from patients with relapsed medulloblastomas treated in different, non-randomized therapy arms dependent on preconditions of the patients (previous treatment, comorbidities, relapse pattern), the decision of treating physicians, and the patients’/parents’ choice. A total of 93 evaluable patients with refractory or relapsed medulloblastoma were enrolled. The main aim of this study was to analyze the impact of patient and disease characteristics as well as local and systemic therapies on post-relapse progression-free (PFS) and overall survival (OS). In multivariate analysis, a short time until the first recurrence (<18 months) was the strongest predictor for a worse PFS and OS, which was mainly associated with molecular subgroup 3. Metastatic disease, at relapse, only had a significant impact on OS. Re-biopsy, at relapse, is highly recommended to investigate the histopathological and molecular genetic tumor characteristics and to exclude a secondary malignancy. ABSTRACT: Recurrent medulloblastomas are associated with survival rates <10%. Adequate multimodal therapy is being discussed as having a major impact on survival. In this study, 93 patients with recurrent medulloblastoma treated in the German P-HIT-REZ 2005 Study were analyzed for survival (PFS, OS) dependent on patient, disease, and treatment characteristics. The median age at the first recurrence was 10.1 years (IQR: 6.9–16.1). Median PFS and OS, at first recurrence, were 7.9 months (CI: 5.7–10.0) and 18.5 months (CI: 13.6–23.5), respectively. Early relapses/progressions (<18 months, n = 30/93) found mainly in molecular subgroup 3 were associated with markedly worse median PFS (HR: 2.34) and OS (HR: 3.26) in regression analyses. A significant survival advantage was found for the use of volume-reducing surgery as well as radiotherapy. Intravenous chemotherapy with carboplatin and etoposide (ivCHT, n = 28/93) showed improved PFS and OS data and the best objective response rate (ORR) was 66.7% compared to oral temozolomide (oCHT, n = 47/93) which was 34.8%. Intraventricular (n = 43) as well as high-dose chemotherapy (n = 17) at first relapse was not related to a significant survival benefit. Although the results are limited due to a non-randomized study design, they may serve as a basis for future treatment decisions in order to improve the patients’ survival
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Improved 6-year overall survival in AT/RT - results of the registry study Rhabdoid 2007
Atypical teratoid rhabdoid tumors (AT/RT) are characterized by mutations and subsequent inactivation of SMARCB1 (INI1, hSNF5), a predilection for very young children and an unfavorable outcome. The European Registry for rhabdoid tumors (EU-RHAB) was established to generate a common European database and to establish a standardized treatment regimen as the basis for phase I/II trials. Thus, genetic analyses, neuropathologic and radiologic diagnoses, and a consensus treatment regimen were prospectively evaluated. From 2005 to 2009, 31 patients with AT/RT from four countries were recruited into the registry study Rhabdoid 2007 and treated with systemic and intraventricular chemotherapy. Eight patients received high-dose chemotherapy, 23 radiotherapy, and 17 maintenance therapy. Reference evaluations were performed in 64% (genetic analyses, FISH, MLPA, sequencing) up to 97% (neuropathology, INI1 stain). Germ-line mutations (GLM) were detected in 6/21 patients. Prolonged overall survival was associated with age above 3years, radiotherapy and achievement of a complete remission. 6-year overall and event-free survival rates were 46% (+/- 0.10) and 45% (+/- 0.09), respectively. Serious adverse events and one treatment-related death due to insufficiency of a ventriculo peritoneal shunt (VP-shunt) and consecutive herniation were noted. Acquisition of standardized data including reference diagnosis and a standard treatment schedule improved data quality along with a survival benefit. Treatment was feasible with significant but manageable toxicity. Although our analysis is biased due to heterogeneous adherence to therapy, EU-RHAB provides the best available basis for phase I/II clinical trials
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