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Exophthalmos Caused by Chronic Sinusitis in a Horse: A Case of Exophthalmos Caused by Sinusitis |
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| Authors: | Teppei Kanda DVM Yoshiaki Hikasa DVM PhD Misaki Naota Takehito Morita DVM PhD Akinori Shimada DVM PhD Tomohiko Amaya DVM |
| Affiliation: | aLaboratories of Veterinary Internal Medicine, Faculty of Agriculture, Tottori University, Koyama-Minami, Tottori, Japan bVeterinary Pathology, Department of Veterinary Medicine, Faculty of Agriculture, Tottori University, Koyama-Minami, Tottori, Japan cYamato-Kogen Animal Medical Clinic, Habikino, Osaka, Japan |
| Abstract: | A 12-year-old Thoroughbred gelding exhibited a unilateral exophthalmos on the left side. There had been no other clinical symptoms, such as rhinorrhea, before the first consultation. Clinical, hematologic, plasma biochemical, cytologic, and computed tomography (CT) examinations and complete necropsy were performed. These examinations did not reveal neoplastic lesions. CT images suggested that maxillary and frontal sinuses may have been filled with fluid. Cytologic and pathologic examinations revealed that the maxillary and orbital bones were pushed up with a large amount of the inflammatory fluid effused by chronic sinusitis. The CT and cytologic examinations were of great use for differential diagnosis in this case. This was an unusual case of exophthalmos induced by deformation of the orbital bones resulting from chronic sinusitis. |
| Keywords: | Equine Exophthalmos Chronic Sinusitis Non-neoplasm |
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