The Puzzling Olfactory Groove Schwannoma: A Systematic Review

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dc.contributor Sistema FMUSP-HC: Faculdade de Medicina da Universidade de São Paulo (FMUSP) e Hospital das Clínicas da FMUSP
dc.contributor.author FIGUEIREDO, Eberval Gadelha FMUSP-HC
SOGA, Yougi
AMORIM, Robson Luis Oliveira FMUSP-HC
OLIVEIRA, Arthur Maynart Pereira
TEIXEIRA, Manoel Jacobsen FMUSP-HC
dc.date.issued 2011
dc.identifier.citation SKULL BASE-AN INTERDISCIPLINARY APPROACH, v.21, n.1, p.31-35, 2011
dc.identifier.issn 1531-5010
dc.identifier.uri http://observatorio.fm.usp.br/handle/OPI/23148
dc.description.abstract We systematically reviewed the literature concerning the anterior cranial fossa schwannomas to understand their pathogenesis, determine their origin, and standardize the terminology. We performed a MEDLINE, EMBASE, and Science Citation Index Expanded search of the literature; age, gender, clinical presentation, presence or absence of hyposmia, radiological features, and apparent origin were analyzed and tabulated. Cases in a context of neurofibromatosis and nasal schwannomas with intracranial extension were not included. Age varied between 14 and 63 years (mean = 30.9). There were 22 male and 11 female patients. The clinical presentation included seizures (n = 15), headache (n = 16), visual deficits (n = 7), cognitive disturbances (n = 3), and rhinorrhea (n = 1). Hyposmia was present in 14 cases, absent in 13 cases (39.3%), and unreported in five. Homogeneous and heterogeneous contrast enhancement was observed in 14 and 15 cases, respectively. The region of the olfactory groove was the probable site in 96.5%. Olfactory tract could be identified in 39.3%. The most probable origin is the meningeal branches of trigeminal nerve or anterior ethmoidal nerves. Thus, olfactory groove schwannoma would better describe its origin and pathogenesis and should be the term preferentially used to name it.
dc.language.iso eng
dc.publisher THIEME MEDICAL PUBL INC
dc.relation.ispartof Skull Base-An Interdisciplinary Approach
dc.rights restrictedAccess
dc.subject Anterior cranial fossa; olfactory groove; olfactory nerve; schwannomas; subfrontal tumors
dc.subject.other intracranial subfrontal schwannoma; enigmatic origin; hyposmia; tumor
dc.title The Puzzling Olfactory Groove Schwannoma: A Systematic Review
dc.type article
dc.rights.holder Copyright THIEME MEDICAL PUBL INC
dc.description.group LIM/45
dc.description.group LIM/26
dc.identifier.doi 10.1055/s-0030-1262945
dc.identifier.pmid 22451797
dc.type.category review
dc.type.version publishedVersion
hcfmusp.author FIGUEIREDO, Eberval Gadelha:HC:ICHC
hcfmusp.author AMORIM, Robson Luis Oliveira:HC:ICHC
hcfmusp.author TEIXEIRA, Manoel Jacobsen:FM:MNE
hcfmusp.author.external · SOGA, Yougi:Nigata Univ, Brain Res Inst, Dept Neurosurg, Niigata, Japan
· OLIVEIRA, Arthur Maynart Pereira:Univ Sao Paulo, Sch Med, Div Neurol Surg, Sao Paulo, Brazil
hcfmusp.origem.id 2-s2.0-78650439484
hcfmusp.origem.id WOS:000285707500005
hcfmusp.publisher.city NEW YORK
hcfmusp.publisher.country USA
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dc.description.index PubMed
hcfmusp.citation.scopus 23
hcfmusp.affiliation.country Brasil
hcfmusp.affiliation.country Japão
hcfmusp.scopus.lastupdate 2021-08-27


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