Case Report

Trauma-induced exostosis of multiple suture lines causing partial bilateral nasolacrimal duct obstruction in a 7-year-old Thoroughbred mare

Luke A. Poore, Christelle le Roux, Ann Carstens
Journal of the South African Veterinary Association | Vol 90 | a1764 | DOI: https://doi.org/10.4102/jsava.v90i0.1764 | © 2019 Luke A. Poore, Christelle le Roux, Ann Carstens | This work is licensed under CC Attribution 4.0
Submitted: 23 November 2018 | Published: 26 September 2019

About the author(s)

Luke A. Poore, Department of Companion Animal Clinical Studies, Faculty of Veterinary Science, University of Pretoria, Pretoria, South Africa
Christelle le Roux, Department of Companion Animal Clinical Studies, Faculty of Veterinary Science, University of Pretoria, Pretoria, South Africa
Ann Carstens, Department of Companion Animal Clinical Studies, Faculty of Veterinary Science, University of Pretoria, Pretoria, South Africa


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Abstract

A definitive diagnosis of extensive suture line exostoses affecting the nasofrontal, nasolacrimal, nasomaxillary, frontolacrimal, lacrimozygomatic and lacrimomaxillary suture lines in a 7-year-old Thoroughbred mare with chronic bilateral epiphora and facial deformation was achieved using standing computed tomography (CT) examinations. Positive contrast dacryocystorhinography using CT revealed partial bilateral obstruction of the nasolacrimal ducts. Minimally displaced depression fractures of the right nasal bone, the right maxillary bone and right frontal bone were also demonstrated. The cosmetic appearance of the periosteal reaction associated with the suture line exostosis and epiphora significantly improved within 3 months of diagnosis and treatment.

Keywords

horse; trauma; computed tomography; exostosis; suture lines

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