Image-guided robotic stereotactic body radiotherapy for benign spinal tumors: the university of california san francisco preliminary experience.

Image-guided robotic stereotactic body radiotherapy for benign spinal tumors: the university of california san francisco preliminary experience. Research Abstract Details 

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Image-guided robotic stereotactic body radiotherapy for benign spinal tumors: the university of california san francisco preliminary experience. Abstract Text:

A Sahgal,D Chou,C Ames,L Ma,K Lamborn,K Huang,C Chuang,A Aiken,P Petti,P Weinstein,D Larson,A Sahgal,D Chou,C Ames,L Ma,K Lamborn,K Huang,C Chuang,A Aiken,P Petti,P Weinstein,D Larson,

We evaluate our preliminary experience using the Cyberknife(R) Radiosurgery System in treating benign spinal tumors. A retrospective review of 16 consecutively treated patients, comprising 19 benign spinal tumors, was performed. Histologic types included neurofibroma [11], chordoma [4], hemangioma [2], and meningioma [2]. Three patients had Neurofibromatosis Type 1 (NF1). Only one tumor, recurrent chordoma, had been previously irradiated, and as such not considered in the local failure analysis. Local failure, for the remaining 18 tumors, was based clinically on symptom progression and/or tumor enlargement based on imaging. Indications for spine stereotactic body radiotherapy (SBRT) consisted of either adjuvant to subtotal resection (5/19), primary treatment alone (12/19), boost following external beam radiotherapy (1/19), and salvage following previous radiation (1/19). Median tumor follow-up is 25 months (2-37), and one patient (with NF1) died at 12 months from a stroke. The median total dose, number of fractions, and prescription isodose was 21 Gy (10-30 Gy), 3 fx (1-5 fx), 80% (42-87%). The median tumor volume was 7.6 cc (0.2-274.1 cc). The median V100 (volume V receiving 100% of the prescribed dose) and maximum tumor dose was 95% (77-100%) and 26.7 Gy (15.4-59.7 Gy), respectively. Three tumors progressed at 2, 4, and 36 months post-SR (n=18). Two tumors were neurofibromas (both in NF1 patients), and the third was an intramedullary hemangioblastoma. Based on imaging, two tumors had MRI documented progression, three had regressed, and 13 were unchanged (n=18). With short follow-up, local control following Cyberknife spine SBRT for benign spinal tumors appear acceptable.

Image-guided robotic stereotactic body radiotherapy for benign spinal tumors: the university of california san francisco preliminary experience. Publishing Authors By Initials

A Sahgal,D Chou,C Ames,L Ma,K Lamborn,K Huang,C Chuang,A Aiken,P Petti,P Weinstein,D Larson,A Sahgal,D Chou,C Ames,L Ma,K Lamborn,K Huang,C Chuang,A Aiken,P Petti,P Weinstein,D Larson,

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Image-guided robotic stereotactic body radiotherapy for benign spinal tumors: the university of california san francisco preliminary experience. Journal Published:

PUBLICATION TYPE: Journal Article

Journal: Technology in cancer research & treatment

VOLUME: 6

Page Numbers: 595-604

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ISSN: 1533-0346

DAY: 12

MONTH: Dec

YEAR: 2007

Image-guided robotic stereotactic body radiotherapy for benign spinal tumors: the university of california san francisco preliminary experience. Information

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LANGUAGE: eng

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AFFILIATION: Departments of Radiation Oncology, University of California San Francisco, 505 Parnassus Avenue, San Francisco, CA 94143, USA. arjun.sahgal@sunnybrook.ca.

Country: United States

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MEDLINETA: Technol Cancer Res Treat

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