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NCI Dictionary of Cancer Terms

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NCI Dictionary of Cancer Terms



teratoma  listen  (TAYR-uh-TOH-muh)

  A type of germ cell tumor that may contain several different types of tissue, such as hair, muscle, and bone. Teratomas occur most often in the ovaries in women, the testicles in men, and the tailbone in children. Not all teratomas are malignant.