Peer-reviewed veterinary case report
Chinchilla with cyst behind right eye caused by Taenia coenurus
By Holmberg, Bradford J et al.·Published in Veterinary ophthalmology·2007·Veterinary Medical Teaching Hospital, United States·View original on PubMed →
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Original publication title: Taenia coenurus in the orbit of a chinchilla.
- Species:
- rodent
Plain-English summary
A 4-year-old male chinchilla was brought to the vet because his right eye was bulging out more and more over five months. The vet found a fluid-filled mass behind the eye and confirmed it was a cyst caused by a parasitic infection. The cyst was surgically removed, and after the operation, the bulging of the eye went away completely. The chinchilla had no complications afterward and remained healthy for two years following the surgery.
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Abstract
A 4-year old, male intact, captive-bred chinchilla (Chinchilla lanigera) was presented due to progressive exophthalmos of the right eye over a 5-month period. Ophthalmic examination revealed exophthalmos with dorsal displacement of the right globe. Retropulsion was decreased and a fluctuant, subcutaneous mass could be palpated posterior and dorsal to the central aspect of the zygomatic bone. Transdermal ultrasonography revealed a fluid-filled mass consistent with a cyst located within the ventral right orbit. Computed tomography demonstrated dorsal displacement of the globe, lateral displacement of the zygomatic arch, and numerous mineral-dense foci within the lumen of the cyst. The cyst was removed en bloc by ventral transpalpebral orbitotomy. Histopathology revealed a single capsulated cyst with multiple invaginated protoscolices, characterized by a prominent scolex with refractile hooklets, suckers, and abundant calcareous corpuscles consistent with a Taenia coenurus. Exophthalmos resolved with surgical therapy and there was no evidence of recurrence or postoperative complications over a period of 2 years. To the authors' knowledge, this is the first reported case of an orbital cyst of parasitic origin in a chinchilla.
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Search related cases →Original publication on PubMed: https://pubmed.ncbi.nlm.nih.gov/17204129/