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photoradiation

(fō′tō-rā′dē-āshən)
n.
  1. A treatment for cancer in which an individual is injected with a photosensitizing agent and the cancerous tissue is exposed to visible light, often by means of a fiberoptic probe.photochemotherapy
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.