Table 1.
Etiology | Glioneuronal neoplasm often associated with cortical dysplasia. Originate from abnormal dysplastic germinal matrix cells |
Incidence | Dysembryoplastic neuroepithelial tumor (DNET) represents 1.2% of all neuroepithelial tumors in patients under age 20 and 0.2% of those aged more than 20 years |
Gender ratio | M:F=23:16 |
Age predilection | Peak incidence in first two decades |
Treatment | Surgical Resection |
Prognosis | Excellent. Grade I WHO |
Findings on imaging | MRI: usually supratentorial, intracortical, T1 hypointense, T2 hyperintense, non-enhancing lesion. Commonly shows a soap bubble, “bubbly” or septated appearance. Adjacent cortical dysplasia may be seen. More common in temporal rather than frontal lobes. |