Cochlear hypoplasia

Cochlear hypoplasia is defined by small underdeveloped cochlea <2 turns.

Radiographic features

  • a small cochlear bud of variable length (usually 1–3 mm).  It has only one turn or a partial turn is seen
  • cochlear nerve often hypoplastic or absent
  • cochlear nerve canal: absent, narrow or normal
  • vestibule and semicircular canals are usually malformed but may be normal
  • internal auditory canal: normal or narrow
  • vestibular aqueduct: normal or large

See also

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Article Information

rID: 47547
System: Head & Neck
Section: Pathology
Tag: cases
Synonyms or Alternate Spellings:

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