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Home >Information for Patients > Dictionary Index

Dictionary of Cancer Terms

View in Spanish: Comienzo del tumor

Tumor initiation (TOO-mer ih-NIH-shee-AY-shun)
A process in which normal cells are changed so that they are able to form tumors. Substances that cause cancer can be tumor initiators.



 
 
Source: National Cancer Institute Dictionary of Cancer Terms, available at www.cancer.gov/dictionary.