NCI Dictionary of Cancer Terms

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

The NCI Dictionary of Cancer Terms features 7,804 terms related to cancer and medicine.

Browse the dictionary by selecting a letter of the alphabet or by entering a cancer-related word or phrase in the search box.

iobenguane I 131
(I-oh-BEN-gwayn …)
A drug containing a form of radioactive iodine called I 131 that is used to find or treat certain types of tumors, including pheochromocytomas and neuroblastomas. It is also used to relieve pain caused by cancer that has spread to the bones. Radiation from the I 131 may help kill cancer cells or show where they are in the body. Iobenguane I 131 is a type of radioimaging agent and a type of radioconjugate. Also called 131I-MIBG and iodine I 131 metaiodobenzylguanidine.