Cases reported "Meningioma"

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1/368. foramen magnum meningioma presenting as amyotrophic lateral sclerosis.

    amyotrophic lateral sclerosis (ALS) is a progressive, degenerative disease of the nervous system. It affects adults in all age groups and leads to death few years after the diagnosis. The etiology is unknown, and there no convincing medical or surgical therapy Some diseases can mimic ALS. If diagnosed early these may be treatable, but if misdiagnosed as ALS and left untreated they may be fatal. We present a case of foramen magnum meningioma presenting clinically as ALS. After surgery, the symptoms disappeared and the neurological deficits improved.
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ranking = 1
keywords = foramen
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2/368. Stereotactic radiosurgery for anterior foramen magnum meningiomas.

    BACKGROUND: Total microsurgical resection is the procedure of choice for growing and symptomatic foramen magnum meningiomas. We hypothesized that for patients with advanced age, complicating medical conditions, or residual or recurrent meningiomas at the foramen magnum, stereotactic radiosurgery would be a useful adjunctive (n = 2) or alternative (n = 3) treatment. methods: We report our experience in five elderly patients (73-84 years) who underwent gamma knife radiosurgery. The median tumor volume was 10.5 ml and the tumor margin dose varied from 10 to 16 Gy. Because of the irregular tumor volumes along the inferior clivus, multiple isocenters of irradiation were required (range, 2-8; mean 4.4). RESULTS: During the follow-up interval of 1-5 years (median, 3 years), one patient died of an intercurrent illness, and all remaining patients were stable without any further deterioration in their clinical condition. Follow-up imaging studies revealed a reduction in tumor volume in one patient and no further growth in the remaining four. CONCLUSION: We believe that stereotactic radiosurgery provides safe and effective management for patients who are poor candidates for resection of their foramen magnum meningiomas.
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ranking = 7
keywords = foramen
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3/368. Multiple skull base meningioma: case report.

    BACKGROUND: The incidence of multiple skull base meningiomas varies from 1 to 3% in different series. skull base meningiomas are rare. The pathogenetic role of low-dose radiation seems to be fairly well established in the oncogenesis of meningiomas. Calvarial location and multiplicity seem to be among the distinctive features of radiation-induced meningiomas. skull base location is a very rare occurrence, mainly because the path of irradiation does not significantly involve this region. CASE REPORT: We describe a rare case of simultaneous occurrence of two skull base meningiomas in a 66-year-old female. This patient underwent low-dose irradiation for tinea capitis when she was 8 years old. The patient complained of nuchal pain, paresthesias in both hands, and progressive weakness on her right side. She was admitted to the hospital in September 1994. An MRI showed two masses, one located at the level of the tuberculum sellae and the other at the foramen magnum. These seemed very likely to be multiple meningiomas. The latter lesion, which was more symptomatic and dangerous, was operated on first. Six months later, elective treatment of the suprasellar meningioma was performed with success. CONCLUSION: The actual role of previous head irradiation in the oncogenesis of the present meningiomas remains somewhat unclear. Proper management and judicious use of skull base surgery techniques were key factors in the successful treatment of the patient.
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ranking = 1
keywords = foramen
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4/368. Complications of treatment: pulmonary embolism following craniotomy for meningioma.

    We present two case reports of patients who suffered a pulmonary embolism (PE) in the week following surgery for removal of a meningioma. Both patients were anticoagulated in the first week following surgery, and as a result, both suffered intracerebral bleeds requiring further surgery. An inferior vena caval (IVC) filter was then used in both patients to prevent further embolic events. Following our experience, we believe that it is dangerous to use intravenous anticoagulation within 6 days of cranial surgery for removal of a meningioma. We have reviewed the literature concerning the present guidelines for thromboembolic prophylaxis in patients requiring neurosurgery and believe that consideration of subcutaneous low-molecular-weight heparin should now be given to all patients requiring craniotomy for removal of a meningioma.
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ranking = 0.15677555083398
keywords = cerebral
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5/368. choroid plexus papilloma of cerebellopontine angle with extension to foramen magnum.

    A case of choroid plexus papilloma resembling meningioma of cerebellopontine (CP) angle with its extension to foramen magnum is presented. Occurrence of this tumour in CP angle is very rare. Its extension towards foramen magnum is further rare. It was a real diagnostic enigma preoperatively as the tumour was resembling meningioma upto some extent on radiological study. Retromastoid craniectomy with microsurgical excision of tumour and its extension was achieved in toto. Tumour was attached to few rootlets of lower cranial nerves which were preserved. Attachment of the tumour with lower cranial nerves again caused diagnostic confusion with neurofibroma intraoperatively.
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ranking = 6
keywords = foramen
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6/368. A new subtype of meningioma.

    Three patients with small meningiomas presented with diffuse cerebral edema that was out of proportion to the size of tumors. All lesions were small and no brain invasion or unusual tumor vascularity or dural sinus involvement was noted in any of the three cases. Tumor material was subjected to conventional and immunohistochemical stains. All three tumors showed benign meningothelial components, prominent formation of hyaline inclusions (pseudopsammoma bodies), and striking vascular mural proliferation of small dark cells. All patients have remained asymptomatic without any evidence of tumor recurrence after a follow-up of 4-6 years. These tumors showed proliferation of pericytes in blood vessel walls and, therefore, represent a new subtype of meningothelial meningioma. In the study presented here, the location, size, histotype, and clinical findings that may influence the development of peritumoral brain edema are discussed in detail.
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ranking = 0.15677555083398
keywords = cerebral
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7/368. 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.
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ranking = 0.34611807574185
keywords = ventricle
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8/368. 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.
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ranking = 0.34611807574185
keywords = ventricle
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9/368. Reverse U-shaped split temporalis musculofascial flap in cranial base reconstruction.

    To extend the versatility and range of the temporalis muscle, a new type of temporalis musculofascial flap was developed. This was achieved by dividing the muscle into two portions--anterior and posterior-while maintaining vascular communication between the deep and the middle temporal arteries. This flap is reverse U-shaped with one of the arms of the "U" corresponding to a pedicle, which supplies the blood, and the other corresponding to the recipient region. The bottom of the U corresponds to continuity between the anterior and posterior portions of the muscle, which contains the vascular communication. In two patients with meningioma, the flap was applied to occupy the extradural dead space combined with a pericranial flap to prevent leakage of cerebral spinal fluid to the dural defect. The reverse U-shaped split temporalis musculofascial flap has some advantages for intracranial reconstruction: sufficient rotational arc, adequate thickness, and rich vascularity. A reverse U-shaped split temporalis musculofascial flap is useful and of benefit, especially for reconstruction at the region of the anterior midline skull base.
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ranking = 0.15677555083398
keywords = cerebral
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10/368. Intracerebral cystic meningioma--case report.

    A 46-year-old female presented with persistent bifrontal headache. Computed tomography revealed a large cystic tumor in the right temporoparietal area, which included a solid component. The tumor had no attachment to the dura. There was no peritumoral edema or mass effect usually found around cystic meningiomas. The solid component was totally removed. Histological examination indicated that the tumor was a fibrous meningioma. Intracerebral meningioma with a large cystic component without dural attachment should be considered in the differential diagnosis of cystic cerebral tumors.
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ranking = 0.9406533050039
keywords = cerebral
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