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• Clinical Article •
MRI features of rosette-forming glioneuronal tumor
FENG Qi-xing  DAI Jian-ping  MA Jun  MIN Xiang-de 

DOI:10.3969/j.issn.1674-8034.2015.04.001.


[Abstract] Objective: To study the radiographic features of rosette-forming glioneuronal tumor (RGNT), and enhance neuroradiologist’s awareness of this newly described tumor.Materials and Methods: The radiological images of 10 patients with pathologically proved RGNT were retrospectively analyzed. There were 3 males and 7 females, with the age between 8 to 45 years. Routine MR (10 cases) and CT (3 cases), contrast-enhanced MR (10 cases) were performed.Results: There were located in cerebellar vermis (4 cases), in the fourth ventricle (2 cases), in cerebellar hemisphere (1 case), in pons (1 case), in the cervical spinal cord (1 case), in thoracic and lumbar spinal cord (1 case).The solid component of the tumor showed slightly hypo-isointense on T1WI and slightly hyperintense on T2WI.The cystic component of the tumor appeared hypointense on T1WI and hyperintense on T2WI. The enhancement pattern was various, from mild to moderate heterogenous enhancement (6 cases), ring (1 case), or focal enhancement which is nodular (2 cases), spot-like (1 case). Eight cases showed mild peritumoural edema and 1 case showed moderate edema. Four cases accompanied with obstructive hydrocephalus and 1 case with syringomyelia. On plain CT scan, solid regions showed slightly low density, cystic regions appeared low density and 2 cases showed intratumoral bleeding.Conclusion: RGNT might occur in younger age and has mild female predilection. Imaging appearance of RGNT has certain characteristics and should be considered for differentiation.
[Keywords] Neurons；Nervous system neoplasms；Magnetic resonance imaging；Pathology

FENG Qi-xing Neuroimaging center, Beijing Tiantan Hospital, Capital Medical University, Beijing 100050, China

DAI Jian-ping* Neuroimaging center, Beijing Tiantan Hospital, Capital Medical University, Beijing 100050, China

MA Jun Neuroimaging center, Beijing Tiantan Hospital, Capital Medical University, Beijing 100050, China

MIN Xiang-de Department of Radiology, Tongji Hospital, Tongji Medical University, Huazhong University of Science Technology, Wuhan 430030, China

*Correspondence to: Dai JP, E-mail: daijianping_2008@126.com

Conflicts of interest   None.

Received  2015-02-04
Accepted  2015-03-03
DOI: 10.3969/j.issn.1674-8034.2015.04.001
DOI:10.3969/j.issn.1674-8034.2015.04.001.

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