High control rates of proton- and carbon-ion-beam treatment with intensity-modulated active raster scanning in 101 patients with skull base chondrosarcoma at the Heidelberg Ion Beam Therapy Center
| Autor: | Matthias, Mattke, Kira, Vogt, Nina, Bougatf, Thomas, Welzel, Jan, Oelmann-Avendano, Henrik, Hauswald, Alexandra, Jensen, Malte, Ellerbrock, Oliver, Jäkel, Thomas, Haberer, Klaus, Herfarth, Jürgen, Debus, Matthias, Uhl |
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| Rok vydání: | 2017 |
| Předmět: |
Adult
Male Age Factors Chondrosarcoma Heavy Ion Radiotherapy Kaplan-Meier Estimate Middle Aged Skull Base Neoplasms Survival Rate Young Adult Treatment Outcome Germany Humans Female Carbon Radioisotopes Dose Fractionation Radiation Radiotherapy Intensity-Modulated Neoplasm Recurrence Local Protons Radiation Injuries Aged Follow-Up Studies Retrospective Studies |
| Zdroj: | Cancer. 124(9) |
| ISSN: | 1097-0142 |
| Popis: | The current study compares the results of irradiation with protons and irradiation with carbon ions via a raster scan technique in patients with G1 and G2 skull base chondrosarcomas.Between 2009 and 2014, a total of 101 patients (40 men and 61 women) with a median age of 44 years (range, 19-77 years) were irradiated with carbon ions (79 patients) or protons (22 patients) via a raster scan technique at the Heidelberg Ion Beam Therapy Center. The median total dose was 60 Gy (relative biological effectiveness [RBE]) at 3 Gy per fraction for carbon ions and 70 Gy (RBE) at 2 Gy per fraction for protons. The median boost planning target volume was 38 cmThe median follow-up period was 40 months (range, 0.8-78.1 months). At the start of the irradiation, all patients had residual macroscopic tumors. Five patients (5%) developed a local recurrence during the follow-up. The 1-, 2-, and 4-year LC rates were 100%, 100%, and 100%, respectively, for protons and 98.6%, 97.2%, and 90.5%, respectively, for carbon ions. The OS rates during the same periods of time were 100%, 100%, and 100%, respectively, for protons and 100%, 98.5%, and 92.9%, respectively, for carbon ions. An age ≤ 44 years was associated with a trend for a better outcome. No toxicity worse than Common Toxicity Criteria grade 3 was observed after treatment.No significant difference between carbon ions and protons in the therapy of skull base chondrosarcoma could be detected in these initial retrospective results. Cancer 2018;124:2036-44. © 2018 American Cancer Society. |
| Databáze: | OpenAIRE |
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