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Comparative analysis imaging manifestations between cystic oligodendroglioma and pleomorphic xanthoastrocytoma
WANG Dan  ZHANG Guo-jin  ZHANG Wen-juan  ZHANG Qiao-ying  ZHOU Jun-lin  YAN Jun 

DOI:10.12015/issn.1674-8034.2017.10.010.


[Abstract] Objective: Comparison of the different MRI findings between the cystic oligodendroglioma (COD) and pleomorphic xanthoastrocytoma (PXA) to make a differential diagnosis.Materials and Methods: The MRI imaging data of 15 cases of COD and 9 cases of PXA confirmed by pathology were retrospectively analyzed and compared the differences of age and 10 MRI findings of two tumors. The chi-square test was used to compare the counting data. The independent sample t test and non-parametric test was used to compare the measurement data.Results: Differences in tumor size (t=4.824, P<0.01), tumor shape (χ2=13.211, P<0.01), the location of the mural nodule (χ2=13.211, P<0.01), homogenous enhancement of the mural nodule (χ2=9.802, P<0.01) and the enhancement degree of cystic wall (χ2=10.959, P<0.01) between COD and PXA were statistically significant. Differences in tumor location (χ2=3.898, P>0.05), the division of the pia mater (χ2=0.059, P>0.05), T2WI signal of the mural nodule (χ2=0.336, P>0.05), DWI signal of the mural nodule (χ2=0.059, P>0.05), the smoothness of cystic wall (χ2=0.320, P>0.05), relationship with adjacent brain (χ2=0.800, P>0.05) and peritumoral edema (χ2=0.572, P>0.05) were not statistically significant. And the predilection age difference was not statistically significant either (Z=-1.717, P<0.05).Conclusion: The MRI findings in tumor size, tumor shape, the location of the mural nodule, homogeneous enhancement of the mural nodule and the enhancement degree of cystic wall are helpful in the differential diagnosis between COD and PXA. The tumor location and the predilection age can be used as a supplementary indicator of differential diagnosis.
[Keywords] Oligodendroglioma；Astrocytoma；Magnetic resonance imaging；Diffusion-weighted imaging

WANG Dan Department of Radiology, Lanzhou University Second Hospital, Lanzhou 730030, China

ZHANG Guo-jin Department of Radiology, Lanzhou University Second Hospital, Lanzhou 730030, China

ZHANG Wen-juan Department of Radiology, Lanzhou University Second Hospital, Lanzhou 730030, China

ZHANG Qiao-ying Department of Radiology, Lanzhou University Second Hospital, Lanzhou 730030, China

ZHOU Jun-lin* Department of Radiology, Lanzhou University Second Hospital, Lanzhou 730030, China

YAN Jun Department of Radiology, Lanzhou University Second Hospital, Lanzhou 730030, China

*Correspondence to: ZHOU JL, E-mail: zjl601@163.com

Conflicts of interest   None.

Received  2017-03-17
Accepted  2017-06-12
DOI: 10.12015/issn.1674-8034.2017.10.010
DOI:10.12015/issn.1674-8034.2017.10.010.

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