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FIG 1. Large endolymphatic duct and sac.
A, High-resolution axial temporal bone CT scan of the left ear in a patient with LEDS shows enlargement of the bony vestibular aqueduct (large arrow). The scalloped contour of the posterior temporal bone (small arrows) is created by the enlarged endolymphatic sac, although the sac itself is not discernible on the CT scan.
B, Corresponding high-resolution axial temporal bone T2-weighted FSE MR image shows enlargement of the endolymphatic duct (arrow) and sac (arrowhead).
(Reprinted from [22] with permission.)
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