Abstract:

The objective of this study is to investigate the Magnetic Resonance Imaging (MRI) and Computerized Tomography (CT) characteristics of multiple meningiomas (MM) which are rarely seen except with Recklinghausen disease. Seven female patients (average age: 49.28 years) with MM who have no family history of Recklinghausen disease are included in this study. All patients were scanned with MRI and one patient was also scanned with CT. Localization, intensity, contrast pattern (dural enhancement), and invasion characteristics were analyzed.Localizations of the tumors were as follows: 4 lesions in convexity, 3 lesions in parasagittal, 1 lesion in olfactorial groove, 1 lesion in tentorium and 1 lesion in sellar region. Multiple tumors were hypo intense in T1 weighted images, hyper intense in T2 weighted images and homogen contrast pattern (dural tail) in all cases. CT characteristics were similar to MRI. Meningiomas are the most common extra axial brain tumors which arise from the durameter and rarely seen in multiples except in Recklinghausen disease. Pathogenesis for multiplicity is largely unknown. Because they are mostly seen in females, as ours role of hormonal factors are speculated.

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