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Dysembryoplastic neuroepithelial tumor. A case report.
T Wierzba-Bobrowicz1, B Schmidt-Sidor, M Zabek
1Department of Neuropathology, Institute of Psychiatry and Neurology, Warszawa.
Folia Neuropathologica
|December 3, 1999
Summary
Dysembryoplastic neuroepithelial tumor (DNT) is a rare brain tumor. This case highlights its unique glial-neuronal mixed nature and diagnostic features in a young woman with epilepsy.
Area of Science:
- Neuro-oncology
- Neuropathology
Background:
- Dysembryoplastic neuroepithelial tumor (DNT) is a rare, benign glial-neuronal tumor of the cerebral cortex.
- WHO classification includes DNTs in the group of neuronal and glial-neuronal mixed tumors due to their diverse cellular composition.
Observation:
- A case of a 19-year-old woman with a three-year history of temporal lobe epilepsy is presented.
- Cranial MRI revealed a pseudocystic tumor in the temporal lobe.
- Histopathological examination showed neuronal-glial nodules, parallel glial-neuronal columns surrounded by oligodendrocyte-like cells (OLC), and dysplastic-free ganglionic cells.
Findings:
- Immunocytochemistry confirmed OLCs expressing S-100 protein and synaptophysin.
- The tumor exhibited lobuliform areas composed of OLCs.
- The characteristic histological features supported the diagnosis of DNT.
Implications:
- This case underscores the importance of integrating clinical, radiological, and histopathological findings for accurate DNT diagnosis.
- Understanding the mixed glial-neuronal nature of DNT is crucial for its classification and management.
- Further research into DNT pathogenesis and behavior may improve patient outcomes.