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Peer-reviewed veterinary case report

Eye tumor causing left eye removal in a sulfur-crested cockatoo

By Gardhouse, Sara et al.·Published in The Canadian veterinary journal = La revue veterinaire canadienne·2021·Department of Clinical Sciences (Pinard, Canada·View original on PubMed

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Original publication title: Iridociliary adenoma in a greater sulfur-crested cockatoo.

Species:
bird

Plain-English summary

A 34-year-old female greater sulfur-crested cockatoo was brought in for what was thought to be a ruptured left eye. Upon examination, the vet found a large mass affecting the eye, leading to the decision to remove it. Tests confirmed that the mass was an iridociliary adenoma, a type of tumor. After surgery, the cockatoo healed well and showed no signs of the tumor returning after a year.

People also search for: cockatoo eye problems · bird eye tumor treatment · cockatoo surgery recovery

Abstract

A 34-year-old female greater sulfur-crested cockatoowas referred for suspected left globe rupture. Ophthalmic examination revealed effacement of the anterior chamber and cornea by a large mass. The left eye was enucleated due to suspicion of globe rupture, secondary to a neoplastic process or chronic trauma. Histopathological examination revealed complete effacement of the internal ocular structures by a neoplasm morphologically consistent with an iridociliary adenoma. The diagnosis was confirmed by Periodic acid-Schiff histochemistry and immunohistochemistry for S100, Melan-A/PNL2, and vimentin antigens. The cockatoo recovered well from surgery, with appropriate healing of the enucleation site, and no evidence of recurrence at 1-year follow-up. Key clinical message: To the authors' knowledge, this is the first report of iridociliary adenoma in a greater sulfur-crested cockatoo, and the third report of such a neoplasm in a psittacine species with a description of the use of immunohistochemistry to confirm a diagnosis of a rare tumor in a bird species.

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Original publication on PubMed: https://pubmed.ncbi.nlm.nih.gov/33692576/