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Representative axial image from patient's proton therapy plan, with dose shown in color wash. Asterisk marks location of left orbital gyrus.
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The left orbital gyrus was adjacent to the tumor and in the radiation field (Fig 1).
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Axial T2-weighted magnetic resonance images of the patient's tumor (A) immediately prior to proton therapy, (B) 13 months after proton therapy, and (C) 33 months after proton therapy. The tumor involved the hypothalamus and extended posteriorly along the optic tracts.
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Three years thereafter, the patient returned for follow-up with MRI and neuro-ophthalmological examinations, which showed that her tumor and vision were stable (Fig 2).