BACKGROUND Multiple meningiomas occur in <10% of meningioma patients. Their development may be caused by the presence of a predisposing germline mutation in the neurofibromatosis type 2 (NF2) gene. The predisposing gene in patients with non-NF2 associated multiple meningiomas remains to be identified. Recently, SMARCB1 was reported to be a potential predisposing gene for multiple meningiomas in...

Aim. To evaluate the frequency of atypical and malignant meningiomas and analyze recurrence rate; to study the morbidity and mortality of these tumors compared to benign meningiomas. Methods. During 1992-2007, 16 patients with malignant and 16 patients with atypical meningioma were operated in Neurosurgery Department of Thessaloniki's Papanikolaou Hospital. We analyzed tumor histology, location...

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.

The recently erected phyllophorid genus Massinium Samyn & Thandar, 2003 hithertho held three species: the southern African endemics Massinium arthroprocessum (Thandar, 1989) and M. maculosum Samyn & Thandar, 2003 (type species), and the central Indo-Pacific M. magnum (Ludwig, 1882). Careful examination of the incomplete holotype of M. magnum and material assigned to this species from various mu...

CE Email comments/questions to compendium@medimedia.com, 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 ...