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11C topotecan (... toh-poh-TEE-kan)

 A substance being studied in the treatment of certain types of cancer, including ovarian cancer and lung cancer. 11C topotecan is a radioactive form of the anticancer drug topotecan. It builds up in tumor tissues and is detected by positron emission tomography (PET). It may be used to help determine whether treatment with topotecan will work. It is a type of topoisomerase I inhibitor.



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