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. 2020 Oct 27;7:580356. doi: 10.3389/fvets.2020.580356

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Copyright © 2020 Dixon, Barnett, Morgan and Reardon.

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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Nasal endoscopy image of the caudal aspect of the middle meatus of horses with ipsilateral sinus and nasal conchal bulla disease. Left image shows loss of VCB and of caudal aspect of ventral concha (arrow) and a fistula into VCS (star) surrounded by inspissated exudate. Middle image also shows loss of VCB and distortion of adjacent ventral concha with inspissated exudate at VCB site. The right image shows sequestered conchal bone lying in middle meatus after VCB infection and sequestration of its bony wall.