meningioma is usually a benign central nervous system (cns) tumor. metastasis is rare; however if it does occur the most metastatic sites are the liver and lungs. here, two cases of cns meningioma with metastasis to cervical lymph nodes are reported. the first case, a 48 year-old man developed cervical lymph node metastasis nine years after primary tumor diagnosis. the second case, a 23 year-ol...

OBJECTIVE To investigate the potential involvements of E-cadherin and beta-catenin in meningioma. METHODS Immunohistochemistry staining was performed on samples from patients with meningioma. The results were graded according to the positive ratio and intensity of tissue immunoreactivity. The expression of E-cadherin and beta-catenin in meningioma was analyzed by its relationship with WHO2007...

Meningioma is a common pathology in the central nervous system (CNS). It arises from the arachnoid cap cells of the arachnoid villi in the meninges, which envelop the brain and spinal cord. Therefore, a meningioma can occur anywhere from the vertex to the spine. It is often named according to its anatomical location. For example, a meningioma abutting the sphenoid bone between the frontal and t...

Cystic meningioma is a rare form of intracranial meningioma. Meningiomas are typically solid tumors but may rarely have cystic components. The diagnosis of cystic meningioma is clinically challenging as the finding of multiple intra-axial tumors, including metastatic tumors, is relatively common. We report a case of cystic meningioma initially diagnosed as a metastatic tumor from a recurrence o...

Primary ectopic meningiomas are extremely rare tumors of controversial origin and they are usually limited to the head and neck region. Its occurrence at the mediastinum is even rarer. There has not been any official report regarding primary mediastinal malignant meningioma until today. Because of its rarity and potential value, we report here a case of primary mediastinal malignant meningioma,...

introduction: meningioma is usually a benign brain tumor, but sometimes with aggressive course. the aim of this study was to assess the ability of 201tl brain spect to differentiate the pathologic grade of meningioma preoperatively. methods: thirty lesions in 28 patients were evaluated in this study. early (20 minutes) and late (3 hours) brain spect images were performed and early uptake ratio...