Preoperative characteristics of 3D CE-MRV for diagnosing parasagittal meningioma

doi:10.3969/j.issn.1674-3806.2016.03.15

Abstract：Objective To summarize the guiding value of 3D CE-MRV for parasagittal meningionma resec-tion.Methods Nineteen patients with parasagittal meningionma were examined preoperatively with 3D CE-MRV, and the tumor′s location , the situation of collateral venous pathways were observed to make the operation schemes , which were compared with the intraoperative findings .Results The meningiomas were found in one third of the loca-tion in the front of superior sagittal sinus in 2 cases, 14 cases in one third of the location in the middle of superior sagittal sinus, and 3 cases in torcular Herophili .The basal part or pedicle adhered to the outer layer of superior sagit-tal sinus was found in 12 cases, meningiomas in 4 cases grew into the outer layer of superior sagittal sinus , and men-ingiomas in 3 cases grew into and blocked the sinus cavity completely .All these manifestations on the images were i-dentical with the findings in the operation .Twelve cases were performed total resection , and 7 cases were performed subtotal resection .The minimum amount of bleeding during the operation was 70 ml, and the shortest time for the op-eration was 47 minutes.There was no any complication after the operation .Conclusion 3D CE-MRV examination can visually display the anatomic structures of the eroded superior sagittal sinus , which may be helpful for making the operation schemes and reducing the operation risks .