Dysembryoplastic neuroepithelial tumor (DNT). Neuroradiological features

onal and sagittal images. CT scans showed a hypodense lesion, MRT a high-signal intensity in T 2 , low signal in T1 and in proton-weighted images a hyperintense rim with a slightly hyperintense small cyst. The multinodular tumor architecture was best seen in MRT. Two DNTs presented partial contrast enhancement, while three DNTs did not take up contrast. In two lesions there were focal calcifications. The infratentorial DNT was associated with a bony defect of the tabula interna into which the tumor expanded. Two angiographies showed no pathological tumor neovascularization. A hypodense, sharply demarcated lesion with a multinodular pattern in MRT with cortical location and without space-occupying signs is, in combination with the clinical symptom of epileptic seizures, highly suggestive of DNT. As our results demonstrate, DNT can also occur in the infratentorial space.