131I-MIBG

Definition of 131I-MIBG

131I-MIBG

A drug that contains a form of radioactive iodine and is used to treat adults and children aged 12 years and older with certain types of malignant pheochromocytoma or paraganglioma that have spread or cannot be removed by surgery. It is also being studied in the treatment of other types of cancer. 131I-MIBG builds up in tumor cells and gives off radiation that may kill them. It is a type of radiotherapeutic agent. Also called Azedra, iobenguane I 131, and iodine I 131-metaiodobenzylguanidine.

Source: NCI Dictionary of Cancer Terms