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Dictionary of Cancer Terms

View in Spanish: Tumor no funcional

Nonfunctioning tumor (non-FUNK-shuh-ning TOO-mer)
A tumor that is found in endocrine tissue but does not make extra hormones. Nonfunctioning tumors usually do not cause symptoms until they grow large or spread to other parts of the body. Also called endocrine-inactive tumor.

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