medulloepithelioma
Pronunciation: meh-DUL-oh-ep-ih-thee-lee-OH-mah
A rare embryonal brain tumor that arises from primitive neuroectodermal tissue, primarily affecting infants and young children.
Full Definition
Medulloepithelioma is an extremely rare embryonal brain tumor that develops from primitive neuroectodermal tissue, characterized by the formation of rosette-like structures resembling the neural tube. These tumors predominantly occur in infants and young children, typically within the first two years of life. The tumor can arise in various locations within the central nervous system, including the cerebral hemispheres, brainstem, and spinal cord. Due to their rarity and aggressive nature, medulloepitheliomas require specialized pediatric neuro-oncological management and carry a generally poor prognosis.
Usage
Usage note: Often confused with other embryonal tumors; requires specific histopathological confirmation.
In Context
- "The pathology report confirmed medulloepithelioma with characteristic rosette formation and high mitotic activity." — Pathology report
- "Given the patient's age and the medulloepithelioma diagnosis, the multidisciplinary team recommended immediate surgical intervention followed by chemotherapy." — Treatment protocol