embryonal tumor

Pronunciation: (em-BRY-uh-nul TOO-mer)

A mass of rapidly growing cells that begins in embryonic (fetal) tissue. Embryonal tumors may be benign or malignant, and include neuroblastomas and Wilms tumors. Also called embryoma.

Source: NCI Dictionary of Cancer Terms

2004-04-23 Date last modified: 2007-10-18