Association of an arachnoid cyst with heterotopic neuroglial tissue in the internal auditory canal
OBJECTIVES: We report a case of an association of an arachnoid cyst with heterotopic neuroglial tissue in the internal auditory canal.
MATERIAL AND METHODS: A 66-year-old woman consulted for cochleovestibular syndrome.
RESULTS: MRI demonstrated a lesion with spontaneous hypersignal on T1- and T2-weighted images, instigating surgical exploration. We discovered a hematic arachnoid cyst associated with heterotopic neuroglial tissue arising in the internal auditory canal.
CONCLUSION: An arachnoid cyst arising within the cerebellopontine angle or the internal auditory canal is a rare occurrence. Clinical manifestations are identical with those produced by a cochleovestibular schwannoma. MRI usually demonstrates a nonenhancing isointense cystic mass with cerebrospinal fluid on all sequences (hypointense on T1-weighted and hyperintense on T2-weighted images). These lesions are usually monitored. Spontaneous hypersignal on T1- and T2-weighted images makes diagnosis difficult, as in our case, leading to surgical exploration.
Medienart: |
E-Artikel |
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Erscheinungsjahr: |
2009 |
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Erschienen: |
2009 |
Enthalten in: |
Zur Gesamtaufnahme - volume:126 |
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Enthalten in: |
Annales d'oto-laryngologie et de chirurgie cervico faciale : bulletin de la Societe d'oto-laryngologie des hopitaux de Paris - 126(2009), 3 vom: 30. Juni, Seite 133-7 |
Sprache: |
Französisch |
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Weiterer Titel: |
Association d'un kyste arachnoïdien et d'une hétérotopie de tissu glial dans le méat auditif interne |
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Beteiligte Personen: |
Aubry, K [VerfasserIn] |
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Links: |
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Themen: |
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Anmerkungen: |
Date Completed 11.09.2009 Date Revised 16.06.2009 published: Print-Electronic Citation Status MEDLINE |
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doi: |
10.1016/j.aorl.2009.03.001 |
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funding: |
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Förderinstitution / Projekttitel: |
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PPN (Katalog-ID): |
NLM18866811X |
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245 | 1 | 0 | |a Association of an arachnoid cyst with heterotopic neuroglial tissue in the internal auditory canal |
246 | 3 | 3 | |a Association d'un kyste arachnoïdien et d'une hétérotopie de tissu glial dans le méat auditif interne |
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500 | |a Date Completed 11.09.2009 | ||
500 | |a Date Revised 16.06.2009 | ||
500 | |a published: Print-Electronic | ||
500 | |a Citation Status MEDLINE | ||
520 | |a OBJECTIVES: We report a case of an association of an arachnoid cyst with heterotopic neuroglial tissue in the internal auditory canal | ||
520 | |a MATERIAL AND METHODS: A 66-year-old woman consulted for cochleovestibular syndrome | ||
520 | |a RESULTS: MRI demonstrated a lesion with spontaneous hypersignal on T1- and T2-weighted images, instigating surgical exploration. We discovered a hematic arachnoid cyst associated with heterotopic neuroglial tissue arising in the internal auditory canal | ||
520 | |a CONCLUSION: An arachnoid cyst arising within the cerebellopontine angle or the internal auditory canal is a rare occurrence. Clinical manifestations are identical with those produced by a cochleovestibular schwannoma. MRI usually demonstrates a nonenhancing isointense cystic mass with cerebrospinal fluid on all sequences (hypointense on T1-weighted and hyperintense on T2-weighted images). These lesions are usually monitored. Spontaneous hypersignal on T1- and T2-weighted images makes diagnosis difficult, as in our case, leading to surgical exploration | ||
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700 | 1 | |a Herman, P |e verfasserin |4 aut | |
700 | 1 | |a Tran Ba Huy, P |e verfasserin |4 aut | |
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