Dysembryoplastic neuroepithelial tumor
(DNET에서 넘어옴)
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