Journal
EYE
Volume 17, Issue 3, Pages 318-323Publisher
NATURE PUBLISHING GROUP
DOI: 10.1038/sj.eye.6700339
Keywords
radiation optic neuropathy; proton beam therapy; clival chordoma
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Purpose Combining maximal surgical resection with high-dose proton radiation therapy is reported to be currently the best management of patients with clival chordoma. Method Since 1991, four consecutive patients from our institution with this tumour have been referred for postoperative proton beam radiotherapy. Result We have experienced an unusually high complication rate (50%) of delayed radiation optic neuropathy. This has resulted in profound, bilateral visual loss at 1 and 2 years postproton beam treatment. Conclusion It has served as a reminder that proton beam therapy is not an innocuous treatment option and this devastating complication should be taken into account when discussing the management of clivus chordoma. We postulate whether the optic apparatus is particularly sensitive to proton vs photon damage.
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