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dc.date.accessioned2013-03-12T12:36:56Z
dc.date.available2017-06-15T22:30:29Z
dc.date.issued2012en_US
dc.date.submitted2012-06-08en_US
dc.identifier.citationØdegaard, Kristina Malene. Intraventricular meningiomas: a consecutive series of 22 patients and literature review. Prosjektoppgave, University of Oslo, 2012en_US
dc.identifier.urihttp://hdl.handle.net/10852/29357
dc.description.abstractObjective: Intraventricular meningiomas (IVMs) are rare tumors of which the majority is located in the lateral ventricles. Most published series on the subject include only a few patients. We analyzed our series of IVMs with a special interest in clinical features, outcome and complications related to surgery. Material & Methods: 22 patients underwent resection of IVMs from 1990 to 2010 at Oslo University Hospital. Surgical and medical records were retrospectively analyzed. Results: The IVMs were located in the trigonum of the lateral ventricles (20/22), in the third ventricle (1/22) and in the fourth ventricle (1/22). The most common symptoms and signs were headache, vertigo, nausea/vomiting, mental disturbances, balance impairment and corticospinal tract signs. Visual field deficit was present preoperatively in two patients. Tumors of the lateral ventricles were resected via a transcortical parieto-occipital approach; the tumors in the third and fourth ventricle via a frontal transcortical and suboccipital route, respectively. Complete tumor resection was achieved in all but one case. Histology was WHO grade I in 20/22 and grade II in 2/22. Surgical mortality was 0%. Most symptoms and signs resolved after surgery. The most common complication was visual field defect: four patients developed new-onset contralateral homonymous quadrant anopia and one patient developed hemianopia. Conclusions: Symptomatic IVMs should be resected, and most symptoms and signs resolve after surgery. The main challenge is to avoid damaging the geniculucalcarine tract when resecting IVMs in the trigonum. Preoperative diffusion tensor imaging-based tractography to map the geniculocalcarine tract should therefore be mandatory before selecting the surgical approach.eng
dc.language.isoengen_US
dc.subjectkirurgi
dc.titleIntraventricular meningiomas: a consecutive series of 22 patients and literature reviewen_US
dc.typeMaster thesisen_US
dc.date.updated2012-06-15en_US
dc.creator.authorØdegaard, Kristina Maleneen_US
dc.subject.nsiVDP::780en_US
dc.identifier.bibliographiccitationinfo:ofi/fmt:kev:mtx:ctx&ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&rft.au=Ødegaard, Kristina Malene&rft.title=Intraventricular meningiomas: a consecutive series of 22 patients and literature review&rft.inst=University of Oslo&rft.date=2012&rft.degree=Prosjektoppgaveen_US
dc.identifier.urnURN:NBN:no-31750en_US
dc.type.documentProsjektoppgaveen_US
dc.identifier.duo166087en_US
dc.contributor.supervisorTorstein Meing, Erik Helsethen_US
dc.identifier.fulltextFulltext https://www.duo.uio.no/bitstream/handle/10852/29357/1/Prosjekt-odegaard.pdf


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