Definition of Pineoblastoma
Pineoblastoma: A fast-growing brain tumor in the pineal gland that originates in neuroepithelial cells. This malignancy is considered by many to be one of the primitive neuroectodermal tumors (PNETs). Also known as pinealoblastoma.
Last Editorial Review: 3/19/2012
Back to MedTerms online medical dictionary A-Z List
Need help identifying pills and medications?