Dysembryoplastic neuroepithelial tumor

Dysembryoplastic neuroepithelial tumor(DNET)은 소아, young adult의 cortex에서 생기는 low grade(G1) brain tumor이다.

Image findings

• slow-growing benign, temporal lobe cortical/subcortical region.
• T2 high SI bubbly appearance(lobulated margin), FLAIR bright rim sign, triangular/centripetal appearance(안쪽으로 뾰족하게 자라는 삼각형 모양←subcortical extension), calcification 30%
• less brain edema, little enhance, low cellularity(ADC high).

DDx

• nontumorous cortical lesion: focal cortical dysplasia
• oligodenroglioma, gangliogioma
• low grade astrocytoma
• PXA