1/64. Intraventricular meningiomas: MR imaging and MR spectroscopic findings in two cases.CT, MR imaging, MR spectroscopy, and angiography were performed in two men (ages 21 and 48, respectively) with intraventricular meningioma. In both cases, CT and MR imaging showed large tumors located in the trigone of the right lateral ventricle that enhanced intensely after contrast administration. MR spectroscopy was helpful in supporting a preoperative diagnosis of meningioma in both cases.- - - - - - - - - - ranking = 1keywords = meningioma, meningiomas (Clic here for more details about this article) |
2/64. Presumed intraventricular meningioma treated by embolisation and the gamma knife.A 58-year-old woman with a presumed incidentally discovered meningioma in the left lateral ventricle was treated by superselective embolisation and gamma knife therapy. The diameter of the tumour was 40 mm, and its main feeding artery was the left lateral posterior choroidal artery. This vessel was embolised with microcoils. At 8 months following embolisation, the diameter of the tumour had decreased and was stable. The gamma knife was chosen as an adjuvant therapy for the further control 13 months after embolisation. Embolisation and gamma knife therapy may be an alternative treatment for meningiomas where surgical resection appears difficult.- - - - - - - - - - ranking = 0.96569603401018keywords = meningioma, meningiomas (Clic here for more details about this article) |
3/64. meningioma of the fourth ventricle.Meningiomas are primary meningeal based tumors of the central nervous system that rarely are located strictly within the fourth ventricle. We report a 72-year-old man operated upon for such a tumor. The pre-operative magnetic resonance images revealed a well circumscribed mass in the fourth ventricle that exhibited a low signal on T1-weighted magnetic resonance images and homogenously enhanced with gadolinium. By light microscopy the tumor was composed of tightly packed spindle cells separated by collagen. immunohistochemistry showed the tumor cells to be positive for vimentin and epithelial membrane antigen, and negative for glial fibrillary acidic protein. Electron microscopy revealed typical findings of meningioma, including interdigitating cell processes, desmosomes, and intermediate filaments. Although rare, fibroblastic meningioma must be included in the differential diagnosis of a fourth ventricular spindle cell tumor in elderly patients.- - - - - - - - - - ranking = 0.31808712622675keywords = meningioma (Clic here for more details about this article) |
4/64. Fourth ventricular meningioma in an adult--case report.A 72-year-old female presented with an intra-fourth ventricular meningioma manifesting as truncal ataxia. Computed tomography (CT) showed a slightly high-density, well-demarcated, and homogeneously enhanced mass located in the fourth ventricle and extending to the right lateral recess. T2-weighted magnetic resonance (MR) imaging revealed a peritumoral high-intensity band without dural tail sign. Bilateral vertebral angiography revealed faint tumor staining supplied from the choroidal branches of the posterior inferior cerebellar arteries. The mass was totally resected via a suboccipital approach. CT, T2-weighted MR imaging, and vertebral angiography are informative for the preoperative diagnosis of fourth ventricular meningioma.- - - - - - - - - - ranking = 0.95426137868024keywords = meningioma (Clic here for more details about this article) |
5/64. meningioma of the lateral cerebral ventricle. A case report.The authors present the case of a 58-year-old woman. At presentation the patient complained of vertigo and noise in the ears with six months history, and from headache, accompanied by nausea and vomiting from three months. The physical examination of the patient found no abnormalities. The neurological examination revealed discoordination syndrome and mild hemiparesis of the left limbs. Computed tomography of the brain without and with contrast medium showed oval tumor, localized in the region of trigonum collaterale and the posterior horn of the right lateral ventricle. Operative intervention was performed after a preoperative management of the patient: transcortical fenestration of the brain in the region of trigonum collaterale and the posterior horn of the right lateral ventricle. The tumor was totally removed. It is well isolated, oval in shape, with feeding blood vessel from plexus chorioideus and was attached to the wall of the ventricle with several thin bridges. Macroscopically the tumor was 3 cm in diameter, with smooth walls, well capsulated, grey-brownish in color and with firm elastic consistence. The histological findings revealed meningioma--meningotheliomatose variant.- - - - - - - - - - ranking = 0.15904356311337keywords = meningioma (Clic here for more details about this article) |
6/64. An unusual intraventricular haemangiopericytoma: MRI and spectroscopy.We present a 43-year-old woman with a tumour within the left lateral ventricle with the typical appearances of meningioma on MRI. (1)H MR spectroscopy demonstrated an increased choline peak, suggesting a malignant form of meningioma. Histologically a haemangiopericytoma was found, an exceptionally rare tumour at this site.- - - - - - - - - - ranking = 0.31808712622675keywords = meningioma (Clic here for more details about this article) |
7/64. Synchronous basal cell carcinoma and meningioma following cranial irradiation for a pilocytic astrocytoma.We report a case of synchronous radiation-induced meningioma and basal cell carcinoma in a 48-year-old man who presented to the plastic surgeons with a fixed scalp lesion sited over a craniotomy scar. Synchronous radiation-induced tumours are a rare occurrence.- - - - - - - - - - ranking = 0.79521781556687keywords = meningioma (Clic here for more details about this article) |
8/64. Intraventricular meningioma of the fourth ventricle.A rare case of meningioma of the fourth ventricle is reported. A review of the literature revealed only 24 reported cases of this type of tumor.- - - - - - - - - - ranking = 0.79521781556687keywords = meningioma (Clic here for more details about this article) |
9/64. Osseous metastases from a benign intraventricular meningioma. Case report.The authors report a case of a 6 month-old male presenting with increasing head circumference and a large benign intraventricular meningioma which was grossly removed at the initial surgery. Twenty-four months later, the patient returned with subcutaneous and osseous metastatic lesions at the site of the previous craniotomy, revealing the same histology as the original tumour. The presentation, pathology and management of this unique case are discussed.- - - - - - - - - - ranking = 0.79521781556687keywords = meningioma (Clic here for more details about this article) |
10/64. Intraventricular solitary fibrous tumor: an unusual tumor with radiological, ultrastructural, and immunohistochemical evaluation: case report.OBJECTIVE AND IMPORTANCE: Intracranial solitary fibrous tumors have been described previously, but intraventricular solitary fibrous tumors are extremely rare. We present what is, to our knowledge, the first reported case of solitary fibrous tumor in the third ventricle. CLINICAL PRESENTATION: A 63-year-old man presented with weakness of his lower extremities and headaches. Computed tomography and magnetic resonance imaging of the brain revealed an enhancing mass in the posterior part of the third ventricle. INTERVENTION: The tumor originated from the wall of the left internal cerebral vein and extended to the posterior part of the third ventricle. Nearly total excision was performed via an infratentorial-supracerebellar approach. CONCLUSION: The differential diagnosis of intracranial solitary fibrous tumors includes fibroblastic meningioma, meningeal hemangiopericytoma, neurofibroma, and schwannoma. The differential diagnosis in the present case was greatly helped by the immunohistochemical and ultrastructural findings, along with a disease-free 3.5-year follow-up. These findings are presented with reference to previous reports.- - - - - - - - - - ranking = 0.15904356311337keywords = meningioma (Clic here for more details about this article) |
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