Advertisement

Pediatric Radiology

, Volume 37, Issue 10, pp 1047–1049 | Cite as

Bilateral duplication of the internal auditory canal

  • Young Cheol Weon
  • Jae Hyoung Kim
  • Sung Kyu Choi
  • Ja-Won Koo
Case Report

Abstract

Duplication of the internal auditory canal is an extremely rare temporal bone anomaly that is believed to result from aplasia or hypoplasia of the vestibulocochlear nerve. We report bilateral duplication of the internal auditory canal in a 28-month-old boy with developmental delay and sensorineural hearing loss.

Keywords

Duplicated internal auditory canal Sensorineural deafness CT MRI Child 

References

  1. 1.
    Vilain J, Pigeolet Y, Casselman JW (1999) Narrow and vacant internal auditory canal. Acta Otorhinolaryngol Belg 53:67–71PubMedGoogle Scholar
  2. 2.
    Casselman JW, Offeciers FE, Govaerts PJ et al (1997) Aplasia and hypoplasia of the vestibulocochlear nerve: diagnosis with MR imaging. Radiology 202:773–781PubMedGoogle Scholar
  3. 3.
    Cho YS, Na DG, Jung JY et al (2000) Narrow internal auditory canal syndrome: parasagittal reconstruction. J Laryngol Otol 114:392–394CrossRefGoogle Scholar
  4. 4.
    Ferreira T, Shayestehfar B, Lufkin R (2003) Narrow, duplicated internal auditory canal. Neuroradiology 45:308–310PubMedGoogle Scholar
  5. 5.
    Demir OI, Cakmakci H, Erdag TK et al (2005) Narrow duplicated internal auditory canal: radiological findings and review of the literature. Pediatr Radiol 35:1220–1223PubMedCrossRefGoogle Scholar
  6. 6.
    Valvassori GE, Pierce RH (1964) The normal internal auditory canal. AJR 92:1232–1241Google Scholar
  7. 7.
    Rothschild MA, Wackym PA, Silvers AR et al (1999) Isolated primary unilateral stenosis of the internal auditory canal. Int J Pediatr Otorhinolaryngol 50:219–224PubMedCrossRefGoogle Scholar
  8. 8.
    Bamiou DE, Worth S, Phelps P et al (2001) Eighth nerve aplasia and hypoplasia in cochlear implant candidates: the clinical perspective. Otol Neurotol 22:492–496PubMedCrossRefGoogle Scholar
  9. 9.
    Yates JA, Patel PC, Millman B et al (1997) Isolated congenital internal auditory canal atresia with normal facial nerve function. Int J Pediatr Otorhinolaryngol 41:1–8PubMedCrossRefGoogle Scholar
  10. 10.
    Winslow CP, Lepore ML (1997) Bilateral agenesis of lateral semicircular canals with hypoplasia of the left internal auditory canal (IAC). Arch Otolaryngol Head Neck Surg 123:1236–1239PubMedGoogle Scholar
  11. 11.
    Williams GH (1990) Developmental anatomy of the ear. In: English GM (eds) Otolaryngology. Lippincott, Philadelphia, pp 1–67Google Scholar
  12. 12.
    Gasser RF (1967) The development of the facial nerve in man. Ann Otol Rhinol Laryngol 76:37–56PubMedGoogle Scholar
  13. 13.
    Weissman JL, Arriaga M, Curtin HD et al (1991) Duplication anomaly of the internal auditory canal. AJNR 12:867–869PubMedGoogle Scholar
  14. 14.
    Curtin H, May M (1986) Double internal auditory canal associated with progressive facial weakness. Am J Otol 7:275–281PubMedGoogle Scholar
  15. 15.
    Morimoto AK, Wiggins RH III, Hudgins PA et al (2006) Absent semicircular canals in CHARGE syndrome: radiologic spectrum of findings. AJNR 27:1663–1671PubMedGoogle Scholar

Copyright information

© Springer-Verlag 2007

Authors and Affiliations

  • Young Cheol Weon
    • 1
  • Jae Hyoung Kim
    • 1
  • Sung Kyu Choi
    • 1
  • Ja-Won Koo
    • 2
  1. 1.Department of Radiology, Seoul National University Bundang HospitalSeoul National University College of MedicineSeongnam-siSouth Korea
  2. 2.Department of Otolaryngology, Seoul National University Bundang HospitalSeoul National University College of MedicineSeongnam-siSouth Korea

Personalised recommendations