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

Erscheinungsjahr:

2009

Erschienen:

2009

Enthalten in:

Zur Gesamtaufnahme - volume:126

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

Weiterer Titel:

Association d'un kyste arachnoïdien et d'une hétérotopie de tissu glial dans le méat auditif interne

Beteiligte Personen:

Aubry, K [VerfasserIn]
Wassef, M [VerfasserIn]
Guichard, J-P [VerfasserIn]
Herman, P [VerfasserIn]
Tran Ba Huy, P [VerfasserIn]

Links:

Volltext

Themen:

Case Reports
English Abstract
Journal Article

Anmerkungen:

Date Completed 11.09.2009

Date Revised 16.06.2009

published: Print-Electronic

Citation Status MEDLINE

doi:

10.1016/j.aorl.2009.03.001

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM18866811X