As a result of the current Federal government funding situation, the information on this website may not be up to date or acted upon.

The NIH Clinical Center (the research hospital of NIH) is open. For more details about its operating status, please visit

Updates regarding government operating status and resumption of normal operations can be found at

NCI Dictionary of Cancer Terms

  • Resize font
  • Print
  • Email
  • Facebook
  • Twitter
  • Google+
  • Pinterest

The NCI Dictionary of Cancer Terms features 8,188 terms related to cancer and medicine.

We offer a widget that you can add to your website to let users look up cancer-related terms. Get NCI’s Dictionary of Cancer Terms Widget.

A drug used to help protect the kidneys in patients receiving cisplatin (a type of anticancer drug) for advanced ovarian cancer. It is also used to help reduce dry mouth in patients receiving radiation therapy after surgery for head and neck cancer. Amifostine helps protect healthy tissue from some of the side effects caused by certain types of cancer treatment. It is a type of chemoprotective agent and a type of radioprotective agent. Also called Ethyol.