radioactive seed

Pronunciation: (RAY-dee-oh-AK-tiv...)

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.

Source: NCI Dictionary of Cancer Terms

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

Date last modified: 2011-03-14