NCI Dictionary of Cancer Terms

The NCI Dictionary of Cancer Terms features 8,413 terms related to cancer and medicine.

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Gleolan
(GLEE-oh-lan)
A drug used during surgery to help find certain types of brain tumors. When Gleolan is taken up by cancer cells and then exposed to certain types of light, it becomes active and may make the cancer cells easier to see. Gleolan contains the active ingredient aminolevulinic acid hydrochloride. It is a type of imaging agent and a type of photosensitizing agent.