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. 2019 Apr 2;10:306. doi: 10.3389/fneur.2019.00306

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Copyright © 2019 Dasgupta and Ratnayake.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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(A) PTA in a child presenting with mixed hearing loss (child 1). (B) Video head impulse test in same child with at least 2 covert replicable saccades in the right posterior semicircular canal (arrow). (C) Coronal (A) and sagittal (B) reconstructions of a high resolution CT scan with consecutive slices demonstrating dehiscence of the right posterior semicircular canal (arrows).