Données démographiques:
6 ans, Féminin
Indication:
Left greater than right sensorineural hearing loss
Constatations
- LEFT
- Normal appearance of the external ear
- The incus appears fused to the lateral wall of the middle ear
- Patulous vestibule with assimilation of the lateral semicircular canal. The posterior and superior semicircular canals are normally formed without dehiscence
- Featureless, bulbous appearance of the cochlea with absent modiolus and internal partitioning
- RIGHT
- Normal appearance of the external and middle ear
- Patulous vestibule with assimilation of the lateral semicircular canal. The posterior and superior semicircular canals are normally formed without dehiscence
- Deficient modiolus with incomplete segmentation of the middle and apical turns of the cochlea
Diagnostic
Left cochlear incomplete partition type I (IP-I)
Caractéristiques clés de l'imagerie
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Diagnostic différentiel
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Discussion