Cancer Dictionary

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x-ray: High-energy radiation used in low doses to diagnose diseases and in high doses to treat cancer.

xeroderma pigmentosum: A genetic condition characterized by a sensitivity to all sources of ultraviolet radiation.

xerogram: A picture of the body recorded on paper rather than on film. Also called a xeroradiograph.

xeroradiography (ZEE-ro-ray-dee-AH-gra- fee): A type of x-ray in which a picture of the body is recorded on paper rather than on film.

XR9576: A substance that is being studied for its ability to overcome tumor-cell resistance to anticancer drugs. It belongs to the family of drugs called anthranilic acid derivatives.

This cancer dictionary is provided by the National Cancer Institute.