Conjunctival mucinous adenocarcinoma in an ostrich (Struthio camelus) |
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Authors: | Kathryn L Perrin Mads F Bertelsen Henrik Bartholin Carsten Grøndahl Steffen Heegaard |
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Institution: | 1. Center for Zoo and Wild Animal Health, Copenhagen Zoo, Frederiksberg, Denmark;2. Rudersdal dyreklinik, Holte, Denmark;3. Department of Pathology, Rigshospitalet, University of Copenhagen, Copenhagen, Denmark;4. Department of Ophthalmology, Rigshospitalet, University of Copenhagen, Copenhagen, Denmark |
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Abstract: | A 2‐year‐old male ostrich (Struthio camelus) presented with a rapidly growing soft tissue mass protruding from the ventromedial aspect of the right eye (OD). The initial physical examination revealed a soft tissue mass attached to the medial inferior conjunctiva. The mass was excised with cryosurgery, and the conjunctival tissue margins were treated with cryoablation. Histopathological examination diagnosed granulomatous inflammation associated with scattered acid‐fast bacteria. The ostrich recovered uneventfully and appeared healthy until recurrence of a grossly similar mass 2 months later. Gross examination revealed a botryoid mass attached to the inferior palpebral conjunctiva and extending onto the palpebral aspect of the nictitating membrane. Euthanasia was selected, and the histological diagnosis of the second mass was a mixed mucinous adenocarcinoma; however, no acid‐fast bacteria were seen. Granulomatous conjunctival lesions have been previously described in the ostrich, while, to the authors' knowledge, neoplastic conjunctival lesions have not. Neoplasia should be considered as a differential diagnosis for a rapidly recurring, granulomatous conjunctival mass in this species. |
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Keywords: | conjunctiva mucinous adenocarcinoma neoplasia nictitating membrane ostrich
Struthio camelus
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