1-Usually it occurs with external ear dysplasia or atresia.
2- Characterized by
-Contracted middle ear cavity which is a small cavity.
-A cavity smaller than 3 mm is a cavity inadequate for ossicular reconstruction.
-Otosclerosis is an oval window that is obstructed by bone.
Normally, oval window measures about 2 mm in diameter in coronal view.
-Anomalies of the facial nerve and carotid artery.
2- Characterized by
-Contracted middle ear cavity which is a small cavity.
-A cavity smaller than 3 mm is a cavity inadequate for ossicular reconstruction.
-Otosclerosis is an oval window that is obstructed by bone.
Normally, oval window measures about 2 mm in diameter in coronal view.
-Anomalies of the facial nerve and carotid artery.
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