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Glossary: radioactive seed, Masonic Cancer Center, University of Minnesota

radioactive seed


A small, radioactive pellet that is placed in or near a tumor. Cancer cells are killed by the energy given off as the radioactive material breaks down and becomes more stable.

Radioactive seeds; drawing shows a gloved hand using an instrument to pick up small, radioactive seeds.

Radioactive seeds. Small, radioactive seeds may be placed in or near a tumor to kill cancer cells.