Carbon ion radiotherapy of skull base chondrosarcomas.
Int J Radiat Oncol Biol Phys
; 67(1): 171-7, 2007 Jan 01.
Article
en En
| MEDLINE
| ID: mdl-17056193
ABSTRACT
PURPOSE:
To evaluate the effectiveness and toxicity of carbon ion radiotherapy in chondrosarcomas of the skull base. PATIENTS ANDMETHODS:
Between November 1998 and September 2005, 54 patients with low-grade and intermediate-grade chondrosarcomas of the skull base have been treated with carbon ion radiation therapy (RT) using the raster scan technique at the Gesellschaft für Schwerionenforschung in Darmstadt, Germany. All patients had gross residual tumors after surgery. Median total dose was 60 CGE (weekly fractionation 7 x 3.0 CGE). All patients were followed prospectively in regular intervals after treatment. Local control and overall survival rates were calculated using the Kaplan-Meier method. Toxicity was assessed according to the Common Terminology Criteria (CTCAE v.3.0) and the Radiation Therapy Oncology Group (RTOG)/European Organization for Research and Treatment of Cancer (EORTC) score.RESULTS:
Median follow-up was 33 months (range, 3-84 months). Only 2 patients developed local recurrences. The actuarial local control rates were 96.2% and 89.8% at 3 and 4 years; overall survival was 98.2%at 5 years. Only 1 patient developed a mucositis CTCAE Grade 3; the remaining patients did not develop any acute toxicities >CTCAE Grade 2. Five patients developed minor late toxicities (RTOG/EORTC Grades 1-2), including bilateral cataract (n = 1), sensory hearing loss (n = 1), a reduction of growth hormone (n = 1), and asymptomatic radiation-induced white matter changes of the adjacent temporal lobe (n = 2). Grade 3 late toxicity occurred in 1 patient (1.9%) only.CONCLUSIONS:
Carbon ion RT is an effective treatment for low- and intermediate-grade chondrosarcomas of the skull base offering high local control rates with low toxicity.
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Bases de datos:
MEDLINE
Asunto principal:
Isótopos de Carbono
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Condrosarcoma
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Neoplasias de la Base del Cráneo
Tipo de estudio:
Observational_studies
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Prognostic_studies
Límite:
Adolescent
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Adult
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Aged
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Child
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Female
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Humans
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Male
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Middle aged
Idioma:
En
Revista:
Int J Radiat Oncol Biol Phys
Año:
2007
Tipo del documento:
Article
País de afiliación:
Alemania