1/16. meningioma of the fourth ventricle presenting with intermittent behaviour disorders: a case report and review of the literature.Intraventricular meningiomas are rare, representing 0.5-5% of all intracranial meningiomas. They arise mostly within the lateral ventricles and more rarely in the third ventricle. Meningiomas of the fourth ventricle are exceptional. They are clearly defined as meningiomas arising from the choroid plexus and lying strictly within the fourth ventricle. We report a 76 year old male patient presenting with a 2-week history of headache and cognitive disorders with agitation and restlessness particularly exacerbated at night or when lying down. CT scan and MR imaging showed a contrast-enhancing lesion located purely within the whole fourth ventricle, with slight ventricular enlargement. At surgery, we totally removed a well-vascularised, greyish encapsulated mass attached to the choroid plexus. Pathological examination revealed a WHO grade I fibroblastic meningioma. We reviewed the literature concerning this unusual meningioma location.- - - - - - - - - - ranking = 1keywords = behaviour (Clic here for more details about this article) |
2/16. gout of the temporomandibular joint: pitfalls in diagnosis.gout is a frequent benign disease that rarely affects the temporomandibular joint (TMJ) alone. When it does, the disease is usually confined to the joint space and leads to pain and limitation of jaw opening (acute gout). The case described in this report is atypical in so far as it extended beyond the joint capsule into the pterygoid muscle and destroyed the head of the mandible, the temporal bone and the greater wing of the sphenoid bone. This clinical behaviour in combination with the radiographic appearance created the appearance of a benign but osteolytic lesion. The clinical, radiographic and biological features of gout in the TMJ are reviewed and treatment options are discussed.- - - - - - - - - - ranking = 0.25keywords = behaviour (Clic here for more details about this article) |
3/16. Occult brain tumour presenting with burns.An elderly male patient sustained mixed depth burns of 5% total body surface area. The incident was associated with inappropriate behaviour and subsequent clinical examination confirmed the presence of confusion and a hemiparesis. A CT scan revealed an intracranial tumour. Despite early suspicions that tumour excision would be delayed, wound healing was achieved quickly following tangential burn wound excision and skin grafting, and prompt transfer to a neurosurgical unit was expedited. Cases of burns and concomitant intracranial tumours with deteriorating neurological signs may present clinicians with a dilemma in deciding whether or not to await burn wound healing before carrying out tumour excision.- - - - - - - - - - ranking = 0.25keywords = behaviour (Clic here for more details about this article) |
4/16. Normal-pressure hydrocephalus due to tentorial meningioma.Normal-pressure hydrocephalus and the associated triad of dementia, apraxic gait and urinary incontinence may be casued by various, sometimes unsuspected, lesions, usually those that block the flow of cerebrospinal fluid (CSF) around the tentorium. A 58-year-old woman with insidious onset of behaviour and gait problems had occult, normal-pressure hydrocephalus and a tentorial meningioma, resection of which produced complete recovery. This case demonstrates that a distinction must be made between the syndrome of normal-pressure hydrocephalus resulting from disturbance in CSF dynamics and the pathophysiologic features of the underlying lesion.- - - - - - - - - - ranking = 0.25keywords = behaviour (Clic here for more details about this article) |
5/16. A scalp lesion over an extracerebral mass: a sign of a radiation-induced meningioma.radiation-induced meningiomas have a characteristic biological behaviour, so that their recognition is important as regards follow-up. We stress the importance of a scalp lesion over the meningioma on magnetic resonance imaging as a sign of previous radiotherapy.- - - - - - - - - - ranking = 0.25keywords = behaviour (Clic here for more details about this article) |
6/16. Meningeal melanocytoma of the temporal lobe. An uncommon tumor in an unusual location. Case report.Meningeal melanocytomas are rare pigmented tumors of the central nervous system. These tumors are benign melanotic lesions that derive from the melanocytes of the leptomeninges. They may occur anywhere in the cranial and spinal meninges; however, they are found prevalently in the posterior fossa and in the spinal cord. Their epidemiological features, natural history and response to treatment remain poorly understood, even if, in the last 2 years, some reviews have been published about it. We report a new case of intracranial supratentorial meningeal melanocytoma, in the temporal lobe, occurring in a 27-year-old man, admitted to our Institute with a long-time history of seizures. We report histological and radiological characteristics of our case, and briefly review the therapeutical options reported in literature. Preoperative neuroradiological finding is unclear; the preoperative diagnosis is usually meningioma, because of the long duration of symptomatology and the radiological appearance of the lesion as an extra-axial mass. diagnosis of these lesions, as in our case, is made intraoperatively by the gross, jet-black appearance of the tumor and by histological examination. In spite of the benign biologic behaviour, the prognosis remains uncertain, because of the possible local recurrences. According to the results of some works of the last years, it seems appropriate to use postoperative radiotherapy for those patients with symptomatic residual, progressive or recurrent tumors not amenable to further resection.- - - - - - - - - - ranking = 0.25keywords = behaviour (Clic here for more details about this article) |
7/16. High-dose radiation-induced meningioma in children - case report and critical review of the literature.OBJECT: High-dose radiation-induced meningiomas in children are a rare occurrence. We discuss the clinical data and the differences of these rare tumors from those of spontaneous counterpart and radiation-induced meningiomas of the adult population. CASE REPORT: We report a case of meningothelial meningioma, which occurred in a 9-year-old boy who underwent radiotherapy for a parieto-occipital cutaneous angioma. In addition, we collected 18 cases of high-dose radiation-induced meningiomas in children from a literature review with medline. RESULTS: radiation-induced meningiomas in children show a female predominance, a short latency period that seems to be related to the age at irradiation, and an aggressive behaviour. CONCLUSION: Exposure to the potentially carcinogenic effects of radiotherapy should be reserved only for tumors that demonstrate subsequent progression. A meticulous follow-up of patients treated with radiation therapy is mandatory.- - - - - - - - - - ranking = 0.25keywords = behaviour (Clic here for more details about this article) |
8/16. Intracranial gliofibroma mimicking a meningioma: a case report and review of literature.Gliofibromas are rare glio-mesenchymal tumors composed of astrocytic and benign mesenchymal components, which commonly occur in the first two decades of life. They are not listed as a distinct entity in the current WHO classification of CNS tumors. Their biological behaviour is unknown, and histogenesis is debatable. We describe a case of histopathologically proven gliofibroma in the region of the left quadrigeminal plate in a 15-year-old child that mimicked a tentorial meningioma both at imaging and surgery. Post-operatively, the residual tumor regrew to a size similar to the initial mass (4 cm x 3.6 cm x 3.5 cm), within one and a half years after the first surgery. The histopathology of the tumor was similar on both occasions. Although a poor prognosis has been characteristically noted in gliofibromas with high-grade glial component, but the present case had recurrence despite being of low-grade, thus highlighting the uncertain behaviour of this rare tumor.- - - - - - - - - - ranking = 0.5keywords = behaviour (Clic here for more details about this article) |
9/16. Chordoid meningiomas of a different histopathological pattern: a report of two cases.Chordoid meningioma is an uncommon histopathological variant of meningioma with a peculiar chordoma-like appearance. Its association with systemic inflammatory disorder linked to Castleman's syndrome was confirmed in the majority of young patients, however such a relationship in adults remains enigmatic. We report two cases of chordoid meningiomas in adult patients without manifestation of Castleman's syndrome. One tumour was almost totally composed of chordoma-like areas whereas the second one exhibited the unique combination of chordoma- and chondroma-like pattern. This is the first description of chordoid meningioma combined with extensive cartilaginous metaplasia. Both tumours exhibited histological evidence of infiltrative growth, accompanied by a relatively high proliferative index within structures of chordoid appearance. The designation of the chordoid component in meningioma is very important as this subtype of meningioma exhibits a more aggressive biological behaviour and higher risk of recurrence.- - - - - - - - - - ranking = 0.25keywords = behaviour (Clic here for more details about this article) |
10/16. Intracranial non-Hodgkin's MALT lymphoma mimicking a large convexity meningioma.Primary presentation of an intradural Non-Hodgkin's lymphoma is rare. Recently these B cell lymphomas of mucosa associated lymphoid tissue (MALT) have gained acceptance as an important pathological subtype and are distinguishable from other primary CNS lymphomas that exhibit aggressive behaviour. Over the past decade a number of these lesions have been reported to resemble a meningioma both intra-operatively and radiologically. The authors outline such a case of marginal zone B cell lymphoma that clinically and radiologically resembled a meningioma. This case illustrates the rare occurrence of low grade dural B cell lymphoma and the need to consider this entity in the differential diagnosis of CNS lesions, if appropriate targeted therapy is to be administered.- - - - - - - - - - ranking = 0.25keywords = behaviour (Clic here for more details about this article) |
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