BACKGROUND AND PURPOSE The roles of DTI and dynamic susceptibility contrast-enhanced-PWI in predicting the angiographic vascularity of meningiomas have not been studied. We aimed to investigate if these 2 techniques could reflect the angiographic vascularity of meningiomas. MATERIALS AND METHODS Thirty-two consecutive patients with meningiomas who had preoperative dynamic susceptibility contr...

OBJECT With the wider use of CT and MRI, many meningiomas are discovered as incidental findings during diagnostic work-up for unrelated symptoms. The majority shows no or minimal growth. The purpose of this study was to distinguish pathological features of incidentally-found growing meningiomas by comparing incidentally-found with symptomatic meningiomas. METHODS One hundred and thirty two co...

The clinical features of a family with inherited multiple meningiomas as the major manifestation of neurofibromatosis are presented. The value of noninvasive radiological screening investigations is emphasised. The results of cytogenetic and pathological studies on the family are presented and discussed with a review of the relevant literature.

CE Email comments/questions to [email protected], fax 800-556-3288, or log on to www.VetLearn.com Meningiomas are the most common primary tumor of the central nervous system in dogs and cats. Meningiomas are usually histologically benign; however, their biologic behavior may be malignant. Differences between canine and feline meningiomas include histopathologic appearance, prognosis, and...

Contents Summary and recommendations 4 Radiation-induced meningiomas 4 Radiation-induced versus sporadic meningiomas 4 Those at risk 4 Latency 4 Care plans, long-term follow-up, lost to follow-up 4 Recommendations 4 Introduction 5 Incidence and aetiology of sporadic meningioma 6 Increasing incidence 6 Effect of age 6 Known aetiological associations 6 Exposure to ionising radiation 6 Hormones 6 ...

INTRODUCTION Meningiomas are intracranial brain tumours that frequently recur. Recurrence rates up to 20% in 20 years for benign meningiomas, up to 80% for atypical meningiomas and up to 100% for malignant meningiomas, have been reported. The most important prognostic factors for meningioma recurrence are meningioma grade, meningioma invasiveness and radicality of neurosurgical resection. The a...

Meningiomas are central nervous system tumors that originate from the meningeal coverings of the brain and spinal cord. Most meningiomas are pathologically benign or atypical, but 3-5% display malignant features. Despite previous studies on benign and atypical meningiomas, the key molecular pathways involved in malignant transformation remain to be determined, as does the extent of epigenetic a...

BACKGROUND Meningiomas show high recurrence rates even after curative tumor removal. The invasiveness of meningiomas may contribute to their high recurrence rates. Recently, c-MET and hepatocyte growth factor (HGF) have been reported to be involved in cancer invasion. METHODS We examined the immunohistochemical expression of c-MET and HGF in 100 cases of patients with meningiomas who have und...

purpose: in this study we aimed to investigate the benefits of far-lateral approach without partial condylectomy in patients with foramen magnum meningiomas over surgical approach with condylectomy. methods: from 1980 to 2011, a total of 17 patients with foramen magnum meningiomas were treated surgically via far-lateral approach without condylectomy. the follow up period of this study was 6 to ...

Third ventricle meningiomas are rare, representing approximately 0.15% of all meningiomas. The majority of third ventricular meningiomas are located posteriorly in the pineal region. Less commonly, they arise in the anterior part of the third ventricle. We report the cases of two patients with large and giant meningiomas originating in the anterior part of the third ventricle.