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MR imaging features of an intracochlear acoustic schwannoma

  • Martin J. Donnelly (a1), Carmel A. Daly (a2) and Robert J. S. Briggs (a1)


We present a very unusual case of an acoustic neuroma involving the left cochlea and internal auditory canal of a 24-year-old man. Clinical suspicion was aroused when the patient presented with a left total sensorineural hearing loss and continuing vertigo. The diagnosis was made pre-operatively with MRI after initial CT scanning was normal. The tumour was removed via a transotic approach. This case report demonstrates the MRI features of an intracochlear schwannoma and emphasizes the importance of MRI in patients with significant auditory and clinical abnormalities with normal CT scans of the relevant region.


Corresponding author

Mr Robert J. S. Briggs, Consultant Otolaryngologist, Royal Victorian Eye and Ear Hospital, 32 Gisborne Street, East Melbourne, Victoria 3002, Australia.


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Amoils, C. P., Lanser, M. J., Jackler, R. K. (1992) Acoustic neuroma presenting as a middle ear mass. Otolaryngology – Head and Neck Surgery 107: 478482.
Anson, B. J., Donaldson, J. A. (1981) Surgical Anatomy of the Temporal Bone. W. B. Saunders, Philadelphia, pp 475481.
Babin, R. W., Harker, L. A. (1980) Intratabyrinthine acoustic neuromas. Otolaryngology – Head and Neck Surgery 88: 455461.
Casselman, J. W., Kuhweide, R., Deimling, M., Ampe, W., Dehaene, I., Meeus, L. (1993) Constructive interference in steady state-3DFT-MR imaging of the inner ear and cerebellopontine angle. American Journal of Neuroradiology 14: 4757.
DeLozier, H. L., Gacek, R. R., Dana, S. T. (1979) Intralabyrinthine schwannoma. Annals of Otology, Rhinology and Laryngology 88: 187191.
Dix, M. R., Halpike, C. S. (1950) Observations on the pathological mechanism of conductive deafness in certain cases of neuroma of the VIIIth nerve. Journal of Laryngology and Otology 64: 658666.
Gussen, R. (1971) Intramodiolar acoustic neurilemona. Laryngoscope 81: 19791984.
Hawke, M., Keene, M., Robbins, K. T., Fredrickson, J. M., Sima, A. (1981) Occult intralabyrinthine schwannoma. Journal of Otolaryngology 10: 313320.
Huang, T.-S. (1986) Primary intralabyrinthine schwannoma. Annals of Otology, Rhinology and Laryngology 95: 190192.
Jenkins, H. A., Fisch, U. (1980) The transotic approach to resection of difficult acoustic tumours of the cerebellopontine angle. American Journal of Otology 2: 7076.
Johnsson, L.-G., Kingsley, T. C. (1981) Asymptomatic intracochlear neurinoma. A temporal bone report. Archives of Otolaryngology 107: 377381.
Jorgensen, M. B. (1960) Intracochlear neurinoma. Acta Oto-Laryngologica 54: 227232.
Karlan, M. S., Basek, M., Potter, G. B. (1972) Intracochlear neurilemona. Archives of Otolaryngology 96: 573575.
Leonard, J. R., Talbot, M. L. (1970) Asymptomatic acoustic neurilemmoma. Archives of Otolaryngology 91: 117124.
Linthicum, F. H. Jr (1972) Unusual audiometric and histological findings in bilateral acoustic neuromas. Annals of Otology, Rhinology and Laryngology 81: 433437.
Mafee, M., Lachenauer, C. S., Kumar, A., Arnold, P. M., Buckingham, R. A., Valvassori, G. E. (1990) CT and MR imaging of intralabyrinthine schwannoma: report of two cases and review of the literature. Radiology 174: 395400.
Marsot-Dupuch, K., Chouard, Ch., Falisse, B., Meyer, B., Tubiana, J. M. (1993) Place of 3DFT-MR imaging study on cochlear implant candidates. In Cochlear Implants: New Perspectives. Advances in Otolaryngology (Fraysse, B., Denguine, O., eds.), Vol. 48. Karger, Basel, pp 2328.
Miyamoto, R. T., Isenberg, S. F., Culp, W. M., Tubergen, L. B. (1980) Isolated intralabyrinthine schwannoma. American Journal of Otology 1: 215217.
Mulvihill, J. J., Parry, D. M., Sherman, J. L., Pikus, A., Kaiser-Kupfer, M. I., Eldridge, R. (1990) Neurofibromatosis 1 (Recklinghausen disease) and neurofibromatosis 2 (bilateral acoustic neurofibromatosis): an update. Annals of Internal Medicine 113: 3952.
Sterkers, J. M., Perre, J., Viala, P., Foncin, J.-F. (1987) The origin of acoustic neuromas. Acta Oto-Laryngologica 103: 427431.
Stewart, T. J., Liland, J., Schuknecht, H. F. (1975) Occult schwannomas of the vestibular nerve. Archives of Otolaryngology 101: 9195.
Stoney, P. J., Rutka, J., Dolan, E., Hawke, M. (1991) Acoustic neuroma presenting as a middle ear mass. Journal of Otolaryngology 20: 141143.
Storrs, L. A. (1974) Acoustic neuromas presenting as middle ear tumours. Laryngoscope 84: 11751180.
Tran Ba Huy, P., Hassan, J. M., Wassef, M., Mikol, J., Thurel, C. (1987) Acoustic schwannoma presenting as a tumour of the external auditory canal. Annals of Otology, Rhinology and Laryngology 96: 415417.
Vernick, D. M., Graham, M. D., McClatchey, K. D. (1984) Intralabyrinthine schwannoma. Laryngoscope 94: 12411243.
Wanamaker, H. H. (1972) Acoustic neuroma: primary arising in the vestibule. Laryngoscope 82: 10401044.
Weymuller, E. A. Jr (1975) Unsuspected intravestibular schwannoma. Archives of Otolaryngology 101: 630632.
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The Journal of Laryngology & Otology
  • ISSN: 0022-2151
  • EISSN: 1748-5460
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