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NCI Dictionary of Cancer Terms

iodine I 131 ethiodized oil  listen  (I-oh-dine … eh-THY-oh-dized oyl)

  A radioactive substance being studied in the treatment of liver cancer. It is a form of poppy seed oil that contains iodine, some of which is the radioactive substance iodine I 131. It builds up in the blood and lymph vessels in the liver and may kill cancer cells. It is a type of radiopharmaceutical. Also called iodine I 131 Lipiodol.