NCI Dictionary of Cancer Terms

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The NCI Dictionary of Cancer Terms features 8,128 terms related to cancer and medicine.

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mature teratoma
(muh-CHOOR TAYR-uh-TOH-muh)
A type of benign (not cancer) germ cell tumor (type of tumor that begins in the cells that give rise to sperm or eggs) that often contains several different types of tissue such as hair, muscle, and bone. Also called dermoid cyst.