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Titolo:
Is cochlear implantation possible after acoustic tumor removal?
Autore:
Belal, A;
Indirizzi:
Alexandria Ear Hosp, Alexandria, Egypt Alexandria Ear Hosp Alexandria Egypt andria Ear Hosp, Alexandria, Egypt
Titolo Testata:
OTOLOGY & NEUROTOLOGY
fascicolo: 4, volume: 22, anno: 2001,
pagine: 497 - 500
SICI:
1531-7129(200107)22:4<497:ICIPAA>2.0.ZU;2-2
Fonte:
ISI
Lingua:
ENG
Soggetto:
HEARING; PRESERVATION; MANAGEMENT; SURGERY;
Keywords:
cochlear implantation; acoustic tumor; translabyrinthine acoustic tumor removal;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Clinical Medicine
Citazioni:
12
Recensione:
Indirizzi per estratti:
Indirizzo: Belal, A Alexandria Ear Hosp, 1 Sidi Gaber St, Alexandria, Egypt Alexandria Ear Hosp 1 Sidi Gaber St Alexandria Egypt ria, Egypt
Citazione:
A. Belal, "Is cochlear implantation possible after acoustic tumor removal?", OTOL NEURO, 22(4), 2001, pp. 497-500

Abstract

Hypothesis: This study aimed to assess the possibility of hearing restoration after acoustic tumor removal. Background: Hearing restoration surgery may be indicated after surgery of bilateral acoustic tumors or surgery of acoustic tumor in the only hearing ear. The choice is between cochlear implantation and brainstem implantation. Methods: From the temporal bone collection at the House Ear Institute, LosAngeles, the author histologically examined eight temporal bones from seven patients who had undergone acoustic tumor removal during their lifetime. Special emphasis was put on examining the patency of the cochlear turns andon survival of the spiral ganglion cells and cochlear nerve. Results: This study showed that after translabyrinthine acoustic tumor removal, there is progressive osteoneogenesis of the cochlea associated with almost complete degeneration of the spiral ganglion cells and cochlear nerve. Similar findings were noticed after middle fossa removal of acoustic tumor with unsuccessful hearing preservation. Conclusions: The histologic changes described in the cochlea and cochlear nerve represent the effects of ischemia resulting from inadvertent cutting of the blood supply during acoustic tumor removal. It is possible to do cochlear implantation after acoustic tumor removal provided that the result ofpromontory electrical stimulation test is positive (the cochlear nerve is intact) and that implantation is done at the time of acoustic tumor removalor shortly thereafter, before cochlear ossification is complete.

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Documento generato il 02/04/20 alle ore 06:16:34