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hereditary nonpolyposis colon cancer (huh-REH-dih-TAYR-ee NON-PAH-lee-POH-sis KOH-lun KAN-ser)

 An inherited disorder in which affected individuals have a higher-than-normal chance of developing colorectal cancer and certain other types of cancer, often before the age of 50. Also called HNPCC and Lynch syndrome.



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