1/204. Neuro-ophthalmologic manifestations of Maffucci's syndrome and Ollier's disease.patients with Ollier's disease (multiple skeletal enchondromas) and Maffucci's syndrome (multiple enchondromas associated with subcutaneous hemangiomas) may develop skull base chondrosarcomas or low-grade astrocytomas as a delayed consequence of these disorders. We report three patients with Ollier's disease and Maffucci's syndrome who had diplopia as the initial manifestation of intracranial tumors. Since patients with Maffucci's syndrome and Ollier's disease are at risk for the delayed development of brain and systemic neoplasms, neuroophthalmologists must be aware of the need for long-term surveillance in patients affected by these conditions.- - - - - - - - - - ranking = 1keywords = neoplasm (Clic here for more details about this article) |
2/204. Spontaneous remission of chiasmatic/hypothalamic masses in neurofibromatosis type 1: report of two cases.We report two children with neurofibromatosis type 1 showing enhancing masses on MRI suggesting neoplasms in the chiasm and hypothalamic region. In both patients no visual or endocrinal dysfunction was present. On serial MRI spontaneous partial remission was found, implying that a cautious approach to therapeutic management of similar cases should be taken.- - - - - - - - - - ranking = 1keywords = neoplasm (Clic here for more details about this article) |
3/204. Electroconvulsive treatment of a bipolar adolescent postcraniotomy for brain stem astrocytoma.This is the first reported use of electroconvulsive treatment (ECT) in an adolescent with bipolar mania who had been treated with craniectomy for an intracranial neoplasm. The reported case is of a 16-year-old girl with a history of brain stem glioma (pontomesencephalic astrocytoma) diagnosed at 13 years of age. She presented in a psychiatric emergency room with suicidal ideation, depressed mood, irritability, olfactory hallucinations, early insomnia, grandiosity, and guilt. Her symptoms failed to respond to a trial of an antidepressant, mood stabilizer alone, and mood stabilizer in conjunction with a neuroleptic. The decision to use ECT was based on suicidal ideation, extreme disinhibition, and danger to self and others. Significant improvement in mood and remission in psychosis were noted after the eighth treatment. Comparison of 2-week pre-ECT and 3-month post-ECT cognitive testing revealed no change in IQ. This report highlights rapid response and the ability to tolerate ECT in an adolescent diagnosed with bipolar disorder, who had also been treated with radiation and craniotomy.- - - - - - - - - - ranking = 1keywords = neoplasm (Clic here for more details about this article) |
4/204. A case of Ollier's disease associated with two intracerebral low-grade gliomas.Ollier's disease, or multiple enchondromatosis, is a deforming dysplastic disease of cartilage, characterized by multiple, asymmetrically distributed intra-osseous cartilaginous masses in the metaphyses and diaphyses of bones. When associated with soft tissue hemangiomas it is referred to as Maffucci's syndrome, in which the enchondromatosis has no unilateral distribution. The emergence of malignant neoplasms, including gliomas, is a well-recognized complication in Maffucci's syndrome. We report a 28-year-old patient with a history of Ollier's disease, who developed two low-grade cerebral gliomas as well as an intracranial chondroma. This case history questions the distinction between the two forms of enchondromatosis and supports a continuum between these disease entities.- - - - - - - - - - ranking = 1.0006262688205keywords = neoplasm, soft (Clic here for more details about this article) |
5/204. Cerebellar pleomorphic xanthoastrocytoma in an infant.Pleomorphic xanthoastrocytoma (PXA) is a rare brain tumor and typically occurs in the superficial cerebral hemispheres of young subjects. We report a case of PXA in the cerebellum of a 3-month-old infant in view of its unusual location and age. The patient presented with a 1-month history of upward eyeball gazing difficulty. To the authors' knowledge, this is the first report of occurrence of this neoplasm in the cerebellum of an infant. We report the morphologic and immunophenotypical features, and literature review with regard to the clinicopathologic aspects of a case of unusual PXA.- - - - - - - - - - ranking = 1keywords = neoplasm (Clic here for more details about this article) |
6/204. Intracranial papillary endothelial hyperplasia: occurrence of a case after surgery and radiosurgery.Papillary endothelial hyperplasia (PEH) is considered a form of endothelial proliferation rather than a true neoplasm and is usually located in the skin or subcutis. We report a case of intracranial PEH that occurred after surgery for glioma and subsequent radiosurgery. CT and MR revealed an enhancing extra-axial mass located left posterolateral to the brainstem. Intracranial PEH is rare; to our knowledge, development of an intracranial PEH after surgery and radiosurgery has not been previously reported.- - - - - - - - - - ranking = 1keywords = neoplasm (Clic here for more details about this article) |
7/204. Neurohypophyseal pilocytic astrocytoma invading the skull base.We describe the clinical presentation, neuroradiological and histological findings of an unusual case of pilocytic astrocytoma of the neurohypophysis, and discuss the related surgical and prognostic issues of this neoplasm which invaded the skull base and the sphenoid sinus. Only four histologically proven cases of such a tumour have been reported in the English literature, and the pathological features and behaviour of this neoplasm still await definition.- - - - - - - - - - ranking = 2keywords = neoplasm (Clic here for more details about this article) |
8/204. Pleomorphic xanthoastrocytoma derived from glioneuronal malformation in a child with intractable epilepsy.Malformative lesions as well as neoplasms can cause intractable epilepsy in childhood. Even though the neoplastic nature of a lesion is evident in most cases, the distinction can be difficult in some patients. We present the case of a child with intractable epilepsy caused primarily by a glioneuronal malformation. Years after the first surgical intervention, a pleomorphic xanthoastrocytoma evolved from remnants of this lesion. This case suggests that glioneuronal malformations might be precursor lesions of pleomorphic xanthoastrocytomas.- - - - - - - - - - ranking = 1keywords = neoplasm (Clic here for more details about this article) |
9/204. Brain tumors as second malignant neoplasms in patients with osteosarcoma treated with adjuvant and neoadjuvant chemotherapy: report of 2 cases.A malignant, primary brain tumor developed as Second Malignant Neoplasm (SMN) in 2/490 long-term-survivor osteosarcoma patients treated at our Institute over a 20-yr period. They developed the brain tumor (one astrocytoma and one glioblastoma) 3 and 5 yr after treatment, (chemotherapy and surgery), for localized osteosarcoma of the extremity.- - - - - - - - - - ranking = 4keywords = neoplasm (Clic here for more details about this article) |
10/204. Cerebral granular cell astrocytomas: a Mib-1, bcl-2, and telomerase study.Granular cell (GC) astrocytoma is an uncommon variant of glioma that shares the cytologic features and high cytoplasmic lysosomal content with granular cell tumors elsewhere in the body. While the histogenesis and behavior of these neoplasms was originally in dispute because most were reported as single cases, the accumulated literature on approximately three dozen such lesions has now verified their usual astrocytic lineage and poor prognosis. Although the GC cell is thought to represent a degenerative process, little is known in these tumors about cell cycle regulation, as measured by Mib-1 and bcl-2 immunolabeling, or expression of other biomarkers of malignancy, such as telomerase. In our study, GC astrocytomas were similar to gemistocytic astrocytomas in their bland histology, often prominent perivascular lymphocytic cuffing and low Mib-1 labeling indices. Like gemistocytes, GCs appear to represent senescent, non-cycling cells. Absence of significant bcl-2 immunolabeling in our three cases, however, suggests that unlike gemistocytes, GC astrocytes develop senescence by mechanisms other than bcl-2 mediated apoptosis suppression. In one case in which frozen tissue was available for assay, we noted relatively high quantitative telomerase expression. The level paralleled that seen in other glioblastomas. Demise for our three patients occurred 3-25 months post-biopsy. Like gemistocytes, the presence of non-proliferative GCs signifies severe abnormalities in cell cycle regulation and maybe hallmarks of tumors with poor prognosis.- - - - - - - - - - ranking = 1keywords = neoplasm (Clic here for more details about this article) |
| | Next -> |