Type I incomplete partition

Type I incomplete partition, also known as cystic cochleovestibular anomaly

Radiographic features

  • the modiolus is entirely absent; the cochlea has a cystic appearance; and the vestibule is often dilated having a wide communication forming a figure eight
  • the vestibule is distinguishable from the cochlea which differentiate it from a common cavity.
  • vestibular aqueduct usually normal
  • internal auditory canal: small or dilated

Differential diagnosis

See also

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Article Information

rID: 47545
System: Head & Neck
Section: Pathology
Tag: cases
Synonyms or Alternate Spellings:
  • Type I incomplete partition

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Cases and Figures

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