Microsurgical management of intraventricular meningiomas

Abstract

Objective To explore the distribution and microsurgical outcome of intraventricular meningiomas. Methods A retrospective analysis of the clinical data and prognosis of microsurgery was performed in 35 intraventricular meningioma cases. Their clinical manifestations and surgical outcomes were analyzed in order to evaluate the significance of microsurgery. Results Of the 35 intraventricular meningioma cases, 30 were located in single lateral ventricle, 2 in bilateral ventricles, 1 in lateral ventricle and the third ventricle, 1 in the third ventricle and 1 in the fourth ventricle. Total and sub-total resection of tumor were achieved in 30 and 4 cases, respectively. Partial tumor resection was obtained in 1 case.Decompression was undertaken in 3 cases during the operation because of brain edema. One postoperative death occurred.At the early stage after operation, 20 of the 23 patients released from the increased intracranial pressure. All patients were followed up for about 3 months to 8 years, in which 6 of 7 cases recovered from hemiplegia, 2 of 4 cases recovered from hemianopia, 3 of 5 cases released from hydrocephalus and the other 2 cases resorted to V-P shunt and ventriculostomy of the third ventricle,respectively. One case suffered from tumor recurrence and undertook the second surgery. Three patients were lost during the follow-up period. Conclusion Intraventricular meningiomas most commonly arise from the trigone of lateral ventricles. Although their location is always deep, satisfactory clinical outcome of microsurgery for intraventricular meningiomas could be achieved. Key words: Intraventricular; Meningiom; Microsurgery