Unusual presentation of an Amazon parrot (<i>Amazona</i>species) with hepatocellular carcinoma

Freeman, K P; Hahn, Kevin A.; Jones, Michael P.; Petersen, Mark G.; Toal, Robert L.

doi:10.1080/03079459994948

Cited by 7 publications

(2 citation statements)

References 8 publications

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“…Exophthalmos is regularly observed with space occupying masses in the retrobulbar area, as seen in several of our cases. In the few cases in the literature with clinical information, common findings were as follows: no discernible clinical signs, poor body condition, weakness, and/or dehydration . Of our eight cases of primary globe, eyelid, or orbit tumors, only one bird (case 10) showed inappetence and weakness.…”

Section: Discussionmentioning

confidence: 79%

Ocular and eyelid neoplasia in birds: 15 cases (1982–2011)

Fernández

Dubielzig

2014

Veterinary Ophthalmology

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Ocular and eyelid lesions are a common finding in birds; however, avian ocular and eyelid neoplasia is seldom reported. The purpose of this study was to record clinical and pathological data from cases of avian ocular neoplasia submitted to the Comparative Ocular Pathology Laboratory of Wisconsin over a 29-year period. A total of 284 avian ocular pathology cases from 1982 to 2011 were reviewed. Out of those, 15 were diagnosed with nine different ocular tumors (5.2%). Metastatic cancer to the globe was diagnosed in seven cases. Six of the metastatic cancers were diagnosed as lymphoma and one as papillary cystic carcinoma of respiratory epithelial origin, presumably originating in the sinus. Primary tumors were diagnosed in eight cases including three tumors of epithelial origin (undifferentiated carcinoma, multicystic adenoma, and pigmented iridociliary adenoma). A teratoid medulloepithelioma and a ganglioneuroma were presumptively diagnosed. A round cell tumor and squamous cell carcinoma were detected in conjunctival samples, and a teratoma was diagnosed from an episcleral sample.

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Section: Discussionmentioning

confidence: 79%

Ocular and eyelid neoplasia in birds: 15 cases (1982–2011)

Fernández

Dubielzig

2014

Veterinary Ophthalmology

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“…Primary liver carcinomas are classified into the categories of hepatocellular carcinoma (HCC) and cholangiocarcinoma. HCC cases in zoo birds, such as the rosy-billed duck (Netta peposaca), red-headed duck (Aythya americana), orange-headed ground thrush (Zoothera citrina), and Amazon parrot (Amazona species), as well as a wild-caught lesser flamingo (Phoenicopterus minor) and domestic ducks (Anas platyrhynchos domestica), have been reported several studies, and a few cases of cholangiocarcinoma in domestic ducks (Anas platyrhynchos domestica) and a wild-caught Chilean flamingo (Phoenicopterus ruber chilensis) have been reported previously [20][21][22][23]. This case did not cover HCC, in which neoplastic cells differentiate towards hepatocytes, but ICC, where neoplastic cells arise from the peripheral bile duct, and bile ducts proliferate invasively, as evidenced by histopathological findings.…”

Section: Discussionmentioning

confidence: 99%

Intrahepatic Cholangiocarcinoma Identified in a Zoo-Housed Sandhill Crane (Grus canadensis): An Anatomopathological and Metagenomic Study

Kim,

Kwon

2023

Animals

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Tumors in birds can be caused by a variety of factors such as species, age, sex, virus, chemicals, and environment. In particular, tumors are a major cause of death in long-lived birds such as parrots and zoo birds. A male sandhill crane that was bred for 8 years in a zoo was diagnosed with intrahepatic cholangiocarcinoma (ICC). At necropsy, the liver revealed a multinodular mass of variable colors, and severe cirrhosis and hemorrhages were present. Histologically, ICC was characterized by the presence of both types of ICC: small-duct type and large-duct type. Large-duct-type ICC was distinguished by the presence of multifocal biliary neoplasia, characterized by the diffuse papillary proliferation of columnar cells resembling large cholangiocytes. Small-duct-type ICC was characterized by the presence of non-mucin-producing cuboidal cells such as bile duct cells. In this case, no viral cause was identified from the metagenomic analysis and PCR of ICC; however, a contributing role of Cutibacterium sp. and E. coli identified from the metagenomics could not be excluded. This study is the first to describe the anatomopathological characteristics of ICC in the studied sandhill crane and attempts to determine its potential infectious etiology using metagenomics.

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Tumors of pet birds

Reavill¹

2004

Veterinary Clinics of North America: Exotic Animal Practice

115

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Unusual presentation of an Amazon parrot (Amazonaspecies) with hepatocellular carcinoma

Cited by 7 publications

References 8 publications

Ocular and eyelid neoplasia in birds: 15 cases (1982–2011)

Ocular and eyelid neoplasia in birds: 15 cases (1982–2011)

Intrahepatic Cholangiocarcinoma Identified in a Zoo-Housed Sandhill Crane (Grus canadensis): An Anatomopathological and Metagenomic Study

Tumors of pet birds

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