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Dictionary of Cancer Terms

View in Spanish: Microambiente tumoral

Tumor microenvironment (TOO-mer MY-kroh-en-VY-run-MENT)
The normal cells, molecules, and blood vessels that surround and feed a tumor cell. A tumor can change its microenvironment, and the microenvironment can affect how a tumor grows and spreads.

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