Aberrant course of the ICA in a 25-year-old man presenting with pulsatile tinnitus. Aberrant course of the ICA in a 25-year-old man presenting with pulsatile.

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Presentation transcript:

Aberrant course of the ICA in a 25-year-old man presenting with pulsatile tinnitus. Aberrant course of the ICA in a 25-year-old man presenting with pulsatile tinnitus. A, Enhanced axial CT image demonstrates an abnormal lateral course of the right ICA through the middle ear (white arrow). Also note dehiscence of the overlying bony plate. B, Anteroposterior projection image from the MR angiogram of the same patient demonstrates decreased caliber and lateral deviation of the aberrant ICA on the “right reversed-7 sign” (black arrow). S. Vattoth et al. AJNR Am J Neuroradiol 2010;31:211-218 ©2010 by American Society of Neuroradiology