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Conjunctival mucinous adenocarcinoma in an ostrich ( Struthio camelus )
Author(s) -
Perrin Kathryn L.,
Bertelsen Mads F.,
Bartholin Henrik,
Grøndahl Carsten,
Heegaard Steffen
Publication year - 2017
Publication title -
veterinary ophthalmology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.594
H-Index - 50
eISSN - 1463-5224
pISSN - 1463-5216
DOI - 10.1111/vop.12408
Subject(s) - conjunctiva , pathology , medicine , gross examination , histopathological examination , differential diagnosis , soft tissue , palpebral fissure , adenocarcinoma , nictitating membrane , anatomy , cancer , statistics , classical conditioning , mathematics , conditioning
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.