MedicalTerminology DB
Cancer & Tumors Cancer & Oncology

embryonal tumor

Meaning of embryonal tumor: A mass of rapidly growing cells that begins in embryonic (fetal) tissue.

Definition of embryonal tumor

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.

Written and maintained by James Murray Last updated July 21, 2026 Educational reference, not medical advice. Read the limitations.

For learning, not diagnosis. This glossary provides general educational information and is not a substitute for advice from a qualified healthcare professional. If you may be experiencing a medical emergency, contact local emergency services.