NCI Dictionary of Cancer Terms
The NCI Dictionary of Cancer Terms features 8,051 terms related to cancer and medicine.
- embryonal tumor
- listen (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.