Intracochlear Schwannoma: Diagnosis and Management

Detalhes bibliográficos
Autor(a) principal: Bittencourt,Aline Gomes
Data de Publicação: 2014
Outros Autores: Alves,Ricardo Dourado, Ikari,Liliane Satomi, Burke,Patrick Rademaker, Gebrim,Eloisa Maria Santiago, Bento,Ricardo Ferreira
Tipo de documento: Relatório
Idioma: por
Título da fonte: International Archives of Otorhinolaryngology
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1809-48642014000300322
Resumo: Introduction  Schwannomas of the eighth cranial nerve are benign tumors that usually occur in the internal auditory canal or the cerebellopontine angle cistern. Rarely, these tumors may originate from the neural elements within the vestibule, cochlea, or semicircular canals and are called intralabyrinthine schwannomas. Intracochlear schwannomas (ICSs) represent a small percentage of these tumors, and their diagnosis is based on high-resolution magnetic resonance imaging (MRI). Objectives  To report the clinical and radiologic features and audiometric testing results of an ICS in a 48-year-old man after a 22-month follow-up period. Resumed Report  A patient with an 8-year history of persistent tinnitus in his right ear, combined with ipsilateral progressive hearing loss and aural fullness. Audiometry revealed normal hearing in the left ear and a moderate to severe sensorineural hearing loss in the right ear, with decreased speech reception threshold and word recognition score, compared with the exam performed 5 years previously. MRI showed a small intracochlear nodular lesion in the modiolus, isointense on T1 with a high contrast enhancement on T1 postgadolinium images. During the follow-up period, there were no radiologic changes on imaging studies. Thus, a wait-and-scan policy was chosen as the lesion remained stable with no considerable growth and the patient still presents with residual hearing. Conclusions  Once diagnosed, not all ICS patients require surgery. Treatment options for ICS include stereotactic radiotherapy and rescanning policy, depending on the tumor's size, evidence of the tumor's growth, degree of hearing loss, intractable vestibular symptoms, concern about the pathologic diagnosis, and the patient's other medical conditions.
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spelling Intracochlear Schwannoma: Diagnosis and Managementintracochlear schwannomasensorineural hearing lossacoustic neuromatemporal bone tumortransotic approachmagnetic resonance imaging Introduction  Schwannomas of the eighth cranial nerve are benign tumors that usually occur in the internal auditory canal or the cerebellopontine angle cistern. Rarely, these tumors may originate from the neural elements within the vestibule, cochlea, or semicircular canals and are called intralabyrinthine schwannomas. Intracochlear schwannomas (ICSs) represent a small percentage of these tumors, and their diagnosis is based on high-resolution magnetic resonance imaging (MRI). Objectives  To report the clinical and radiologic features and audiometric testing results of an ICS in a 48-year-old man after a 22-month follow-up period. Resumed Report  A patient with an 8-year history of persistent tinnitus in his right ear, combined with ipsilateral progressive hearing loss and aural fullness. Audiometry revealed normal hearing in the left ear and a moderate to severe sensorineural hearing loss in the right ear, with decreased speech reception threshold and word recognition score, compared with the exam performed 5 years previously. MRI showed a small intracochlear nodular lesion in the modiolus, isointense on T1 with a high contrast enhancement on T1 postgadolinium images. During the follow-up period, there were no radiologic changes on imaging studies. Thus, a wait-and-scan policy was chosen as the lesion remained stable with no considerable growth and the patient still presents with residual hearing. Conclusions  Once diagnosed, not all ICS patients require surgery. Treatment options for ICS include stereotactic radiotherapy and rescanning policy, depending on the tumor's size, evidence of the tumor's growth, degree of hearing loss, intractable vestibular symptoms, concern about the pathologic diagnosis, and the patient's other medical conditions. Fundação Otorrinolaringologia2014-01-01info:eu-repo/semantics/reportinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1809-48642014000300322International Archives of Otorhinolaryngology v.18 n.3 2014reponame:International Archives of Otorhinolaryngologyinstname:Fundação Otorrinolaringologia (FORL)instacron:FORL10.1055/s-0033-1364170info:eu-repo/semantics/openAccessBittencourt,Aline GomesAlves,Ricardo DouradoIkari,Liliane SatomiBurke,Patrick RademakerGebrim,Eloisa Maria SantiagoBento,Ricardo Ferreirapor2015-08-24T00:00:00Zoai:scielo:S1809-48642014000300322Revistahttps://www.scielo.br/j/iao/https://old.scielo.br/oai/scielo-oai.php||iaorl@iaorl.org||archives@internationalarchivesent.org||arquivos@forl.org.br1809-48641809-4864opendoar:2015-08-24T00:00International Archives of Otorhinolaryngology - Fundação Otorrinolaringologia (FORL)false
dc.title.none.fl_str_mv Intracochlear Schwannoma: Diagnosis and Management
title Intracochlear Schwannoma: Diagnosis and Management
spellingShingle Intracochlear Schwannoma: Diagnosis and Management
Bittencourt,Aline Gomes
intracochlear schwannoma
sensorineural hearing loss
acoustic neuroma
temporal bone tumor
transotic approach
magnetic resonance imaging
title_short Intracochlear Schwannoma: Diagnosis and Management
title_full Intracochlear Schwannoma: Diagnosis and Management
title_fullStr Intracochlear Schwannoma: Diagnosis and Management
title_full_unstemmed Intracochlear Schwannoma: Diagnosis and Management
title_sort Intracochlear Schwannoma: Diagnosis and Management
author Bittencourt,Aline Gomes
author_facet Bittencourt,Aline Gomes
Alves,Ricardo Dourado
Ikari,Liliane Satomi
Burke,Patrick Rademaker
Gebrim,Eloisa Maria Santiago
Bento,Ricardo Ferreira
author_role author
author2 Alves,Ricardo Dourado
Ikari,Liliane Satomi
Burke,Patrick Rademaker
Gebrim,Eloisa Maria Santiago
Bento,Ricardo Ferreira
author2_role author
author
author
author
author
dc.contributor.author.fl_str_mv Bittencourt,Aline Gomes
Alves,Ricardo Dourado
Ikari,Liliane Satomi
Burke,Patrick Rademaker
Gebrim,Eloisa Maria Santiago
Bento,Ricardo Ferreira
dc.subject.por.fl_str_mv intracochlear schwannoma
sensorineural hearing loss
acoustic neuroma
temporal bone tumor
transotic approach
magnetic resonance imaging
topic intracochlear schwannoma
sensorineural hearing loss
acoustic neuroma
temporal bone tumor
transotic approach
magnetic resonance imaging
description Introduction  Schwannomas of the eighth cranial nerve are benign tumors that usually occur in the internal auditory canal or the cerebellopontine angle cistern. Rarely, these tumors may originate from the neural elements within the vestibule, cochlea, or semicircular canals and are called intralabyrinthine schwannomas. Intracochlear schwannomas (ICSs) represent a small percentage of these tumors, and their diagnosis is based on high-resolution magnetic resonance imaging (MRI). Objectives  To report the clinical and radiologic features and audiometric testing results of an ICS in a 48-year-old man after a 22-month follow-up period. Resumed Report  A patient with an 8-year history of persistent tinnitus in his right ear, combined with ipsilateral progressive hearing loss and aural fullness. Audiometry revealed normal hearing in the left ear and a moderate to severe sensorineural hearing loss in the right ear, with decreased speech reception threshold and word recognition score, compared with the exam performed 5 years previously. MRI showed a small intracochlear nodular lesion in the modiolus, isointense on T1 with a high contrast enhancement on T1 postgadolinium images. During the follow-up period, there were no radiologic changes on imaging studies. Thus, a wait-and-scan policy was chosen as the lesion remained stable with no considerable growth and the patient still presents with residual hearing. Conclusions  Once diagnosed, not all ICS patients require surgery. Treatment options for ICS include stereotactic radiotherapy and rescanning policy, depending on the tumor's size, evidence of the tumor's growth, degree of hearing loss, intractable vestibular symptoms, concern about the pathologic diagnosis, and the patient's other medical conditions.
publishDate 2014
dc.date.none.fl_str_mv 2014-01-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/report
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
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dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1809-48642014000300322
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1809-48642014000300322
dc.language.iso.fl_str_mv por
language por
dc.relation.none.fl_str_mv 10.1055/s-0033-1364170
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
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dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv Fundação Otorrinolaringologia
publisher.none.fl_str_mv Fundação Otorrinolaringologia
dc.source.none.fl_str_mv International Archives of Otorhinolaryngology v.18 n.3 2014
reponame:International Archives of Otorhinolaryngology
instname:Fundação Otorrinolaringologia (FORL)
instacron:FORL
instname_str Fundação Otorrinolaringologia (FORL)
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institution FORL
reponame_str International Archives of Otorhinolaryngology
collection International Archives of Otorhinolaryngology
repository.name.fl_str_mv International Archives of Otorhinolaryngology - Fundação Otorrinolaringologia (FORL)
repository.mail.fl_str_mv ||iaorl@iaorl.org||archives@internationalarchivesent.org||arquivos@forl.org.br
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