Joana Miguéns

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Ependymomas account for 3 to 9% of all neuroepithelial tumors and, although occurring most often within the ventricular system, they may arise from the extraventricular parenchyma as well. Several histologic patterns of these neoplasm are well known, but little attention has been devoted to a variant composed of giant elements. We describe the case of a(More)
Corpus callosotomy was reported for the first time by Dandy in 1922 and developed by Van Wagenen and Herren in 1940, but only Wilson in 1975 started performing it with a microsurgical technique. Its indications have remained controversial for a long time, but during the last years new interest has been raised concerning callosotomy as a treatment for some(More)
— Online social networking site are the most popular sites on the internet. The second generation of web based services is characterized by having a consumer generated content (CGC), which allow people to share information. This paper examines CGC on TripAdvisor, with a case study on the city of Lisbon. Along with a discussion on the radical changes implied(More)
The purpose of the present paper is to analyze the most recent advances in the field of craniosynostosis basic and clinical research and management, and to give an overview of the more frequently adopted surgical strategies. After reviewing some basic concepts regarding normal craniofacial embryology and growth, aetiopathogenesis of craniosynostosis and(More)
Benign fibrous histiocytomas (BFHs) are tumors with fibroblastic and histiocytic components without histological anaplasia. Intracerebral lesions are exceptional and to our knowledge a spinal location was not yet described. We describe 2 cases of BFHs of the neural axis: the first, a 22-month-old boy with Down's syndrome, presented with a paraparesis and(More)
OBJECTIVE Papillary glioneuronal tumors (PGNT) is well-recognized in the literature, although reports usually have not attempted a critical analysis of their characteristics. We report two PGNT and perform a comprehensive review of the published cases, aiming to clarify their clinical, imaging and histopathological features. MATERIAL AND METHODS We have(More)
Gangliogliomas are glioneuronal tumours of the young, and occur more frequently supratentorially. Among those uncommon cases in the spinal cord, the conus medullaris is an extremely rare site. We reviewed the literature of such cases and report another case of a ganglioglioma of the conus in a 13-year-old boy with an insidious sensory sensitive and motor(More)
Four different approach routes have been used to perform the selective amygdalohippocampectomy for the surgical treatment of epilepsy: transcortical through the middle T2 gyrus [1], translyvian through the deep sylvian fissure, transcortical subpial through the anterior T1 gyrus [2] and transcortical through the first temporal sulcus [3]. The choice between(More)
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