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Flashes of light-radiation therapy to the brain
Deborah T Blumenthal1, Benjamin W Corn2, Natan Shtraus2
1Neuro-oncology Service, Oncology Division at the Tel-Aviv Sourasky Medical Center, Tel-Aviv, Israel.
Abstract:
We present a series of three patients who received therapeutic external beam radiation to the brain and experienced a phenomenon of the sensation of flashes of bright or blue light, simultaneous with radiation delivery. We relate this benign phenomenon to low-dose exposure to the eye fields and postulate that the occurrence is underreported in this treated population.

