Fig 1.
Radiologic characteristics of meningiomas in preoperative MRI.
a) T2-weighted MRI demonstrating the complete arachnoid ring (black arrow) and no peritumoral edema; b) T2-weighted MRI demonstrating the disappearance of arachnoid ring (black arrow head) and peritumoral edema c) T1-weighted gadolinium enhanced MRI demonstrating heterogeneous enhancement and irregular shape of the tumor; d) T1-weighted gadolinium enhanced MRI demonstrating homogenous enhancement and regular shape of tumor; e) Diffusion weighted MRI demonstrating hyperintense lesion; f) Diffusion weighted MRI demonstrating isointense lesion.
Table 1.
Summary of the preoperative radiological classification.
Table 2.
Logistic Regression analysis for the clinical and radiological parameters as predictors of WHO non-grade I meningioma.
Fig 2.
Kaplan-Meier Curve for Survival analysis among the group I, II and III.
Fig 3.
Kaplan-Meier Curve for Survival analysis for WHO grade I and non-grade I tumors.
Fig 4.
Bar-graph demonstrating the survival time in group I, II and III in relation to WHO grades of meningioma.
Table 3.
Cox Regression analysis for the clinical and radiological parameters as predictors of unfavorable survival outcomes.
Fig 5.
Progression free survival analysis among the groups I, II and III.
Table 4.
Cox Regression analysis for the clinical and radiological parameters as predictors of recurrence.