NCI Dictionary of Cancer Terms

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The NCI Dictionary of Cancer Terms features 7,863 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.

A drug containing a form of radioactive iodine called I 123 that is used to detect certain types of tumors, including pheochromocytomas and neuroblastomas. Radiation from the I 123 may help show where cancer cells are in the body. 123I-MIBG is a type of radioimaging agent and a type of radioconjugate. Also called AdreView, iobenguane I 123, and iodine I 123 metaiodobenzylguanidine.