Analysis of MR of atypical benign meningionma and benign meningioma at atypical location
- VernacularTitle:非典型表现及非典型部位良性脑膜瘤MR影像分析
- Author:
Yun ZHAO
1
;
Bo WANG
Author Information
1. 贵阳医学院
- Keywords:
Meningioma;
Benign;
Atypical;
Special location;
MR
- From:
China Modern Doctor
2015;(13):110-113
- CountryChina
- Language:Chinese
-
Abstract:
Objective To study the MR characteristics of atypical meningeoma and the benign meningioma at atypical location so as to deepen the understanding of them and improve the preoperative diagnosis accuracy. Methods Re-viewed 30 patients with benign meningionma in which 23 cases were atypical and 7 cases were of atpical location, which had been proved by operation and pathology examination. Observed the morphology, size, location, boundary, oedema of the tumour, relationgship between adjacent meninges, changes of the harnpans nearby and imageology fea-tures. Results In the atypical group, 23 cases were of clear boundaries, 14 cases were of irregularly lobulated, 15 cases appeared with uneven signal and obviously uneven strengthening, 2 cases were with coarse short tails, 1 case appeared that focus was absorded by local harnpan, 1 case appeared with local incrassated harnpan. And in the second group, there were 7 cases with clear boundaries. The focuses located in temporal lobe of left brain in 1 case, epencephalon in 1 case, pineal body in 1 case, trigonum of left brain and another of right in 1case respectively, and there were multiple focuses in 1 case and orbit in 1 case, mostly in which appeared to be material lump with equilong or longer T1 and T2, which were round, ellipse or lobulated, and were intensify equably. Conclusion Atypical meningeoma and the benign meningioma at atypical location present their own features respectively. Most of the atypical meningeoma and the be-nign meningioma at atypical location can be diagnosed qualitatively combining with clinical manifestation.
