Michel aplasia

Michel aplasia, also known as complete labyrinthine aplasia (CLA), is a congenital abnormality of the inner ear and is characterized by bilateral absence of differentiated inner ear structures with resultant anacusis. It should not be confused with Michel dysplasia


Michel aplasia is thought to result from failure of development of the otic placode.


History and etymology

Michel aplasia was first described in 1863.

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Article information

rID: 5586
System: Head & Neck
Tag: cases, refs
Synonyms or Alternate Spellings:
  • Michel deformity
  • Michel's aplasia
  • Michel anomaly
  • Complete labyrinthine aplasia (CLA)
  • Complete labyrinthine aplasia

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Cases and figures

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