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Hypoplastic zygomatic arches.
Bilateral pronounced mandibular antegonial notches & rather short rami.
Small left mandibular condyle, coronoid process & glenoid fossa.
Atresia of the left external auditory canal and middle ear cavity with dysplastic ossicles.
Small right middle ear cavity.
Normal inner ear structures on both sides.
The mastoids are not pneumatized.