ABSTRACT
Objective To investigate the clinical factors which improved the postoperative vision in patients with meningeal tumor of sellar region invaded the optic canal. Methods Clinical data was collected from medical records of patient with meningeal tumors invaded optic canal from Jan. 2010 to Oct. 2016.A multiple factor analysis with logistic regression method was used to analyze these data. Results There were 55 cases included in the study. Vision was improved in 26 cases including 15 of 17 cases with early epidual optic canal decompression, 5 of 9 cases with Later optic canal decompression and 6 of 29 cases with curettage of optic canal tumor. A univariate analysis showed that resection grade,tumor adhesion and early epidural optic canal decompression were associated with visual improvement. Regression analysis showed that early epidural optic canal decompression was the only factor which could improve postoperative vision. Conclusion Early epidural optic canal decompression should be a good choice to improve the postoperative vision of meningeal tumors of sellar region invaded the optic canal.
ABSTRACT
Objective To analyze the MRI features of Ewing sarcoma/peripheral primitive neuroectodermal tumors(pPNETs) arising from the meninges.Methods The MRI imaging of 9 patients with Ewing sarcoma/pPNET were reviewed retrospectively,and imaging features and pathological characteristics were analyzed.Results The age of most patients ranged from 10 to 20 years.Magnetic resonance revealed a spindle-like lesion with a wide base in 8 cases.The lesions showed heterogenous iso-or hypo-intense signal on T1 WI in 7 cases,heterogenous hypo-iso-intense signal on T1 WI in 2 case,and iso-or mildly hypderisointense on T2WI in all cases.The solid part of the tumor was heterogeneously enhanced after injection of gadolinium with cyst degeneration or necrosis.The dural tail sign could be seen in 3 cases.The adjacent skull erosion could be seen in 6 cases.The breakthrough of the plate of cranium and soft-tissue invasion was present in 2 cases.The right eye proptosis was present in 1 case.The distant metastasis was found in 3 cases.Pathology showed that the lesions had high cell density.Hemorrhage and necrosis could be observed.The cells were like lymphocytes and spindle cells with transparent cytoplasm.CD99 and Vimentin were expressed in all tumor cells.Conclusion The imaging findings of the meningeal pPNET are different from meningiomas,which could be useful for the diagnosis and differential diagnosis.