نتایج جستجو برای: Atypical meningioma
تعداد نتایج: 52418 فیلتر نتایج به سال:
Abstract Background: Meningioma is the most common CNS tumor association of this tumor with specific markers P53, Ki67 has been reported in some studies. This study was done with the aim of determining the frequency of these markers in patients presenting with meningioma in a teaching hospital in Tehran. Materials and methods: This cross-sectional study was done on samples obtained from all pat...
OBJECTIVES To evaluate patient outcome and investigate the prognostic factors of high-grade meningiomas by adopting the 2000 World Health Organization (WHO) classification system. METHODS Between 1986 and 2004, 74 patients were diagnosed with high-grade meningioma: 33 with atypical and 41 with anaplastic meningioma. The mean follow-up was 58.5 months. We reclassified all surgical specimens, a...
Transitional meningioma malignant transformation and rib metastases following surgery: A case report
The majority of benign meningiomas exhibit a slow growth rate and are associated with good prognosis. recurrence extracranial metastases meningioma rare. present report describes the case patient transitional for which total resection had been performed 8 years prior. Furthermore, transformed into atypical meningioma, metastasized to ribs. aimed describe clinical features pathological findings ...
Meningioma is a common primary tumor of central nervous system. However, extracranial extension of the intracranial meningioma is unusual, and mostly accompanied the osteolytic change of the skull. We herein describe an atypical meningioma having extracranial extension with hyperostotic change of the skull. The patient was a 72-year-old woman who presented a large mass in the right frontal scal...
Meningioangiomatosis is a rare hamartomatous lesion or meningiovascular malformation in brain. In extremely rare condition, meningioma may occur together with meningioangiomatosis, and only 19 cases have been described in English literature until now. We now report a case of meningioangiomatosis-associated meningioma with atypical and clear cell variant. A 34-year-old man presented a 3-month hi...
One case of intradiploic meningioma, causing partial occlusion of the superior longitudinal sinus, with subsequent visual trouble and another of lipomatous meningioma with great fat content and very calcified, that was found in a LCR fistula study of the cranial anterior stage, are described by the authors as atypical meningiomas.
Meningioma is typically considered to be a benign tumor. Malignant transformation and metastasis of meningiomas are rare. Moreover, most meningiomas are intracranial, and there are few reports on intraspinal meningiomas. This report aimed to describe the clinical features and pathological findings of a case of malignant transformation and distant metastasis of intraspinal meningioma, with a rev...
OBJECTIVES Meningiomas are slow-growing intracranial/intraspinal tumors, with a wide range of histopathologic variants. The more aggressive atypical and malignant types can disseminate via the venous system, lymphatic, system, or cerebrospinal fluid, with the lung and pleura being the most common sites of extracranial metastases. A case of metastatic meningioma with high expression of CD90 was ...
Multiple pulmonary metastases from meningioma are rare. We report here a 59-year-old man with multiple pulmonary metastases from a recurrent intracranial meningioma. The primary intracranial tumour in the left occiput was totally excised in 2009. Pathological examination confirmed the diagnosis of atypical meningioma and adjuvant radiotherapy was given to help prevent recurrence. However, recur...
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