Duplication Anomalies of the Internal Auditory Canal: Varied Spectrum

  • Smita Manchanda
  • Ashu Seith BhallaEmail author
  • Rakesh Kumar
  • Arvind Kumar Kairo
Original Article


Duplication anomalies of the internal auditory canal are rare, with only twenty-one cases reported in literature. These range from incomplete partition and complete partition to true duplication. We present three cases showing this entire spectrum of duplication abnormalities and discuss the role of imaging in the preoperative work up of such patients planned for cochlear implant.


Duplicated internal auditory canal Cochlear implant Vestibulocochlear nerve 


Compliance with Ethical Standards

Conflict of interest

All four authors declare that they have no conflict of interest.

Ethical Approval

This article does not contain any studies with human participants or animals performed by any of the authors.

Informed Consent

Informed consent was obtained from all individual participants included in the study.


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Copyright information

© Association of Otolaryngologists of India 2017

Authors and Affiliations

  • Smita Manchanda
    • 1
  • Ashu Seith Bhalla
    • 1
    Email author
  • Rakesh Kumar
    • 2
  • Arvind Kumar Kairo
    • 2
  1. 1.Department of RadiodiagnosisAll India Institute of Medical SciencesNew DelhiIndia
  2. 2.Department of Otorhinolaryngology and Head-Neck SurgeryAll India Institute of Medical SciencesNew DelhiIndia

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