Suture exostosis causing obstruction in the nasolacrimal duct in three horses

Authors: Carslake HB
Publication: New Zealand Veterinary Journal, Volume 57, Issue 4, pp 229-234, Aug 2009
Publisher: Taylor and Francis

Animal type: Horse, Livestock
Subject Terms: Skeletal/bone/cartilage, Diagnostic procedures, Ear/nose/throat, Eye/opthalmology, Disease/defect, Clinical examination, Imaging, Respiratory system, Surgery
Article class: Clinical Communication

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Abstract: CASE HISTORY: Three horses were presented with facial swelling and epiphora.
CLINICAL FINDINGS: All horses had facial swellings and radiographic findings consistent with exostosis at the lacrimomaxillary suture, and ipsilateral epiphora. Positive contrast dacryocystorhinography demonstrated that the site of obstruction of the nasolacrimal duct was located where the duct traverses the lacrimomaxillary suture.
DIAGNOSIS: Lacrimomaxillary suture exostosis.
CLINICAL RELEVANCE: Lacrimomaxillary suture exostosis should be considered as a differential diagnosis in cases of epiphora in horses. Dacryocystorhinography, preferably retrograde and normograde, may be used as an aid to diagnosis.
KEY WORDS: Dacryocystorhinostenosis, dacryocystorhinography, suture periostosis, suturitis, epiphora, head swelling, horse, equine, facial swelling, nasolacrimal duct, suture exostoses

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