PT  - JOURNAL ARTICLE
AU  - Han, L.
AU  - Qiu, Y.
AU  - Xie, C.
AU  - Zhang, J.
AU  - Lv, X.
AU  - Xiong, W.
AU  - Wang, W.
AU  - Zhang, X.
AU  - Wu, P.
TI  - Atypical Teratoid/Rhabdoid Tumors in Adult Patients: CT and MR Imaging Features
AID  - 10.3174/ajnr.A2361
DP  - 2011 Jan 01
TA  - American Journal of Neuroradiology
PG  - 103--108
VI  - 32
IP  - 1
4099  - http://www.ajnr.org/content/32/1/103.short
4100  - http://www.ajnr.org/content/32/1/103.full
SO  - Am. J. Neuroradiol.2011 Jan 01; 32
AB  - SUMMARY: Primary AT/RT is a rare highly malignant tumor of the CNS, usually occurring in children younger than 5 years of age. The objective of this study was to characterize the CT and MR imaging findings in a series of 5 adult patients with pathologically proved AT/RT. All 5 AT/RTs were supratentorial. In 2 patients who underwent nonenhanced CT, the tumors appeared isoattenuated, and 1 of the 2 tumors contained calcifications. Solid portions of the tumors on MR imaging were isointense on T1-weighted, T2-weighted, and FLAIR images, and 1 case showed restricted diffusion on DWI. The tumors also demonstrated a bandlike rim of strong enhancement surrounding a central cystic area on contrast-enhanced T1-weighted imaging. One tumor was associated with destruction of the calvaria. Although AT/RTs can have nonspecific findings, the tumors in our series were large and isointense on T1-weighted, T2-weighted, and FLAIR images with central necrosis and prominent rim enhancement. ADCapparent diffusion coefficientAT/RTatypical teratoid/rhabdoid tumorCNScentral nervous systemDWIdiffusion-weighted imagingFLAIRfluid-attenuated inversion recoveryLleftmRNAmessenger ribonucleic acidN/Anot availableNDnot depictedOSoverall survivalPNETprimitive neuroectodermal tumorPRpartial resectionRrightTRtotal resection