Radiology Case Reports (May 2020)

Asymmetrically severe internal auditory canal hypoplasia: A case report

  • Jeremy W. Martin,
  • Christian Wishka, DO,
  • Matthew Thompson, MD,
  • Hamid R. Djalilian, MD,
  • David Floriolli, MD,
  • Cagin Senturk, MD,
  • Anton Hasso, MD

Journal volume & issue
Vol. 15, no. 5
pp. 457 – 459

Abstract

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We present a case of an otherwise healthy 20-month-old with congenital sensorineural hearing loss. CT and MR imaging demonstrated bilateral asymmetrically severe hypoplasia of the internal auditory canals and vestibulocochlear nerves. Additional developmental inner ear anomalies were present in this patient, including unilateral semicircular canal hypoplasia and suspected bilateral cochlear hypoplasia. The patient retained normal facial nerve function bilaterally. We highlight the current research and understanding of congenital IAC abnormalities. Keywords: Sensorineural hearing loss, SNHL, Internal auditory canal hypoplasia, Neuroradiology, Incomplete partition