Case 2, 12-year-old boy with right-side mixed HL

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Presentation transcript:

Case 2, 12-year-old boy with right-side mixed HL Case 2, 12-year-old boy with right-side mixed HL. Axial 1-mm CT sections through the level of the cochlear modiolus and the malleo-incudal joint (A) demonstrate a thickened tympanic CN7 (black arrow). Case 2, 12-year-old boy with right-side mixed HL. Axial 1-mm CT sections through the level of the cochlear modiolus and the malleo-incudal joint (A) demonstrate a thickened tympanic CN7 (black arrow). The more inferior axial section at the level of the round window (B) shows two separate proximal mastoid segment nerves. The stapedius tendon is distinctly seen separate from these nerve elements (white arrow). The coronal images confirm a thickened proximal tympanic nerve (C, black arrow) and two segments more posteriorly at the level of the oval window (D). The more inferior of the bifid segments courses lateral to a stenotic oval window (arrow). T = tensor tympani tendon. Christine M. Glastonbury et al. AJNR Am J Neuroradiol 2003;24:1334-1337 ©2003 by American Society of Neuroradiology