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Journal of Korean Neurosurgical Society 2007;42(3): 220-223.
Dural Marginal Zone Lymphoma Confused with Meningioma en Plaque.
Min Young Kim, Seong Min Kim, Seung Young Chung, Moon Sun Park
Department of Neurosurgery, School of Medicine, Eulji University, Daejeon, Korea. nsksm@eulji.ac.kr
We report a case of dural marginal zone lymphoma which showed the usual radiological findings resembling meningioma. A 59-year-old woman presented with headache. Initial computed tomography and magnetic resonance images showed a frontal convexity meningioma. The patient underwent a craniotomy and subtotal (simpson grade II) resection of tumor was done. Pathological examination confirmed an extranodal marginal zone B-cell lymphoma of Mucosa-Associated Lymphoid Tissue (MALT). The lesion was composed of a lymphoid mass with irregularly shaped follicles surrounded by many monomorphic small lymphocytes and a stained marginal zone for B-cell markers CD20 and CD29a. The natural history of primary CNS lymphoma and MALT type lymphoma are different. B-cell MALT lymphoma can mimic meningioma in its radiological features. Accordingly, MALT lymphoma of the CNS must be considered in the differential diagnosis of meningioma.
Key Words: B-cell lympoma of MALT; Meningioma
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