NCI Dictionary of Cancer Terms

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The NCI Dictionary of Cancer Terms features 7,800 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.

topotecan hydrochloride
(toh-poh-TEE-kan HY-droh-KLOR-ide)
A drug used to treat certain types of ovarian cancer, lung cancer, and cervical cancer. Topotecan hydrochloride is a type of topoisomerase inhibitor. Also called Hycamtin and topotecan.