PMC3737615_01
(A) Right and (B) left axial CT sections through temporal bones show hypoplastic and deformed malleus and incus which are fused to each other on the right side (open arrow) and normal ossicles on the contralateral side (white solid arrow)
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F1
Middle ear ossicles were dysplastic with hypoplastic malleus which was fused with deformed incus [Figure 1].
(A) Axial and (B) coronal reconstructed CT sections through temporal bones show two stylomastoid foramen with duplication of mastoid segment of the facial nerve (solid black arrow)
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F2
We traced the course of facial nerve and found duplication of mastoid segment of facial nerve with two stylomastoid foramina on the right side [Figure 2].
(A and B) Serial axial CT sections of the temporal bone show bifurcation of mastoid segment of the facial nerve into medial and lateral segments; the lateral segment carries enlarged chorda tympani branch (open arrows) and the medial segment carries rest of the tympanic segment of the facial nerve
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F3
Mastoid segment of the facial nerve divides into lateral and medial segments with larger lateral segment branch which carries enlarged chorda tympani branch and medial segment branch continues as tympanic branch of the facial nerve [Figure 3].
(A and B) Axial CT sections of temporal bone show normal tympanic and labyrinthine segments of the facial nerve
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F4
There was no duplication of tympanic and labyrinthine segments of the facial nerve [Figure 4].