Clinical outcomes of perioptic tumors treated with hypofractionated stereotactic radiotherapy using CyberKnife® stereotactic radiosurgery
| Autor: | Chomporn Sitathanee, Ake Hansasuta, Rawee Ruangkanchanasetr, Putipun Puataweepong, Mantana Dhanachai, Somjai Dangprasert, Pornpan Yongvithisatid |
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| Rok vydání: | 2018 |
| Předmět: |
Adult
Male Cancer Research medicine.medical_specialty Adolescent medicine.medical_treatment Nervous System Neoplasms Pituitary neoplasm Eye Radiosurgery Young Adult 03 medical and health sciences 0302 clinical medicine Cyberknife Meningeal Neoplasms medicine Humans Pituitary Neoplasms Prospective Studies Prospective cohort study Aged Retrospective Studies business.industry Retrospective cohort study Middle Aged Radiation therapy Treatment Outcome Dose Hypofractionation Neurology Oncology Tumor progression 030220 oncology & carcinogenesis Neoplasms Vascular Tissue Female Radiation Dose Hypofractionation Neurology (clinical) Radiology business 030217 neurology & neurosurgery Follow-Up Studies |
| Zdroj: | Journal of Neuro-Oncology. 139:679-688 |
| ISSN: | 1573-7373 0167-594X |
| Popis: | Stereotactic radiation technique is widely reported as an effective treatment for various types of benign intracranial tumors. However, single fraction radiosurgery (SRS) is not recommended for tumors located close to the optic apparatus due to the restricted radiation tolerance dose of the optic pathway. Recent advances in radiotherapy include advanced frameless radiosurgery using hypofractionated stereotactic radiotherapy (HSRT), and this has become an attractive treatment option for perioptic tumors within 2–3 mm of the optic pathway. Accordingly, the aim of this study was to investigate the clinical outcomes of perioptic tumors treated with HSRT using CyberKnife® (CK) robotic radiosurgery system relative to tumor control, vision preservation and toxicity. This retrospective analysis of prospectively collected data included consecutive 100 patients that were diagnosed with and treated for perioptic tumor at the Radiosurgery center, Ramathibodi Hospital during the January 2009 to December 2012 study period. The median tumor volume was 6.81 cm3 (range 0.37–51.6), and the median prescribed dose was 25 Gy (range 20–35) in 5 fractions (range 3–5). After the median follow-up time of 37.5 months (range 21–103), two patients developed tumor progression at 6 and 34 months post-HSRT. The 5-year overall survival was 97%, and the 5-year local control was 97.5%. At the last follow-up, no vision deterioration or newly developed hypopituitarism was detected in our study. Although a longer follow-up is needed, HSRT yields a high level of local control and vision preservation, and should be considered a treatment of choice for perioptic tumor located close to the optic apparatus. |
| Databáze: | OpenAIRE |
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