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      Olfactory region schwannoma: Excision with preservation of olfaction

      case-report

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          Abstract

          Olfactory region schwannomas are rare, but when they occur, they commonly arise from the meningeal branches of the trigeminal nerve and may present without involvement of the olfaction. A 24 year old lady presented with hemifacial paraesthesias. Radiology revealed a large olfactory region enhancing lesion. She was operated through a transbasal with olfactory preserving approach. This manuscript highlights the importance of olfactory preservation in such lesions.

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          The puzzling olfactory groove schwannoma: a systematic review.

          Eberval Figueiredo, Yougi Soga, Robson Amorim … (2011)
          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.
          Article 0 comments Cited 9 times – based on 0 reviews     Review now
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            Solitary olfactory schwannoma without olfactory dysfunction: a new case report and literature review

            Y. Li, S S Jiang, P. Z. Zhou … (2011)
            Schwannomas are rare and seldom extend into the anterior cranial fossa. Herein, we report a case of schwannoma arising from the olfactory groove in a 16-year-old girl who presented with generalized seizures without olfactory dysfunction or other neurologic deficits. Computerized tomography (CT) scan showed a large mass with abundant calcification located in the olfactory groove, which was confirmed as a schwannoma by histology and totally resected via basal subfrontal approach. The presentation, imaging findings and histogenesis of the tumor are discussed along with a review of the pertinent literature.
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              Preserving olfactory function in anterior craniofacial surgery through cribriform plate osteotomy applied in selected patients.

              Iman Feiz-Erfan, Patrick Han, Robert Spetzler … (2005)
              Olfaction is often sacrificed to gain access to the cranial base in anterior craniofacial surgery. We describe the long-term results of olfactory function in patients who underwent anterior craniofacial surgery and a cribriform plate osteotomy to preserve olfaction.
              Article 0 comments Cited 4 times – based on 0 reviews     Review now
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                Author and article information

                Journal
                Journal ID (nlm-ta): J Neurosci Rural Pract
                Journal ID (iso-abbrev): J Neurosci Rural Pract
                Journal ID (publisher-id): JNRP
                Title: Journal of Neurosciences in Rural Practice
                Publisher: Medknow Publications & Media Pvt Ltd (India )
                ISSN (Print): 0976-3147
                ISSN (Electronic): 0976-3155
                Publication date (Print): Jul-Sep 2014
                Volume: 5
                Issue: 3
                Pages: 281-283
                Affiliations
                [1] Department of Neurosurgery, Post Graduate Institute of Medical Education and Research, Chandigarh, India
                [1 ] Department of Histopathology, Post Graduate Institute of Medical Education and Research, Chandigarh, India
                Author notes
                Address for correspondence: Dr. Pravin Salunke, Department of Neurosurgery, PGIMER, Sector 12, Madhya Marg, Chandigarh - 160 012, India. E-mail: drpravin_salunke@ 123456yahoo.co.uk
                Article
                Publisher ID: JNRP-5-281
                DOI: 10.4103/0976-3147.133600
                PMC ID: 4078619
                SO-VID: fd72434b-2596-49aa-9721-fc680f341498
                Copyright © Copyright: © Journal of Neurosciences in Rural Practice
                License:

                This is an open-access article distributed under the terms of the Creative Commons Attribution-Noncommercial-Share Alike 3.0 Unported, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

                History
                Categories
                Subject: Case Report

                ScienceOpen disciplines: Neurosciences
                Keywords: olfactory groove,olfactory preserving surgery,schwannoma
                Data availability:
                ScienceOpen disciplines: Neurosciences
                Keywords: olfactory groove, olfactory preserving surgery, schwannoma

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