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

Share article

Article information

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

Support Radiopaedia and see fewer ads

Cases and figures

  • Drag
    Case 1
    Drag here to reorder.
  • Updating… Please wait.

    Alert accept

    Error Unable to process the form. Check for errors and try again.

    Alert accept Thank you for updating your details.