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• Clinical Article •
MRI manifestations of "dural tail sign" in meningioma and its related pathology
CHENG Jing-liang  ZHAO Yi-lei  WANG Fei-fei  YAN Chen-yu  BAI Jie  ZHANG Hui-xia  CUI Xiao-lin 

DOI:10.3969/j.issn.1674-8034.2010.02.007.


[Abstract] Objective: To evaluate the MRI features, pathological foundation and clinical significance of the "dural tail sign" in the meningioma.Materials and Methods: Forty-five patients with pathologically proved meningioma were enrolled in this study. Before resection of the meningioma, all patients underwent conventional and contrast-enhanced MR examinations and all possessed the "dural tail sign" on contrast-enhanced MR images. The dural tails were resected during the operation and made pathological examination together with the meningioma mass. The pathological components of the dural tail were all observed.Results: Pathological examination of dural tails showed that 37 cases had tumor cells infiltration (82.2%), 3 cases were only fibrous hyperplasia (6.7%), 5 cases had no tumor cells infiltration and only seen vessel dilation and inflammatory cell infiltration (11.1%). The infiltration of tumor cell in the "dural tail sign" of meningioma was related with tumors’ surrounding edema and meningioma grade (P<0.05), and was not related with the size of the meningioma and shape of the "dural tail sign" (P>0.05).Conclusion: Most of "dural tail sign" tissues in the meningioma have been observed tumor cells infiltration. The "dural tail sign" tissue should be resected completely when performing the meningioma resection.
[Keywords] Meningioma；Pathology；Magnetic resonance imaging

CHENG Jing-liang MRI Room of Radiology Department, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China

ZHAO Yi-lei MRI Room of Radiology Department, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China

WANG Fei-fei* MRI Room of Radiology Department, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China

YAN Chen-yu MRI Room of Radiology Department, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China

BAI Jie MRI Room of Radiology Department, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China

ZHANG Hui-xia MRI Room of Radiology Department, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China

CUI Xiao-lin MRI Room of Radiology Department, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China

*Correspondence to: Wang FF, E-mail: y207006wangfeifei@126.com

Conflicts of interest   None.

Received  2010-02-05
Accepted  2010-03-06
DOI: 10.3969/j.issn.1674-8034.2010.02.007
DOI:10.3969/j.issn.1674-8034.2010.02.007.

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