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Internal Papillomatosis with Intrahepatic Cholangiocarcinoma and Gastrointestinal Adenocarcinoma in a Peach-Fronted Conure (Aratinga aurea)

Paul M. Gibbons, Martin D. Busch, Lisa A. Tell, Jennifer E. Graham and Linda J. Lowenstine
Avian Diseases
Vol. 46, No. 4 (Oct. - Dec., 2002), pp. 1062-1069
Stable URL: http://www.jstor.org/stable/1593339
Page Count: 8
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Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
Internal Papillomatosis with Intrahepatic Cholangiocarcinoma and Gastrointestinal Adenocarcinoma in a Peach-Fronted Conure (Aratinga aurea)
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Abstract

A 17-yr-old pet female peach-fronted conure (Aratinga aurea) was presented with the chief complaints of mild lethargy and weight loss with increased appetite. Antemortem diagnostics included complete blood count, plasma biochemistry, and radiography. Abnormal findings included elevated inflammatory parameters (hyperfibrinogenemia) and a space-occupying mass in the region of the liver. Histologic examination of a liver biopsy sample indicated bile duct hyperplasia leading to a presumptive diagnosis of hepatoxicosis. The bird initially showed moderate improvement with supportive care, but its condition declined 9 days after the liver biopsy. Supportive care was attempted a second time, but the bird did not improve and euthanasia was elected. Abnormal gross necropsy findings were confined to the liver, which contained multiple tan nodules that exuded yellowish fluid on cut section. Histopathologic examination revealed multicentric bile duct hyperplasia and cholangiocarcinoma as well as segmental papillary hyperplasia and adenocarcinoma in the proventriculus, ventriculus, and throughout the intestinal tract. This is the first report of concurrent internal papillomatosis, gastrointestinal adenocarcinoma, and cholangiocarcinoma in a peach-fronted conure. /// Una lora mascota de frente dorada (Aratinga aurea) de 17 años de edad fue presentada por su propietario, quien describió la presencia de letargo suave y pérdida de peso con un aumento del apetito. Los diagnósticos, antes de su muerte, incluyeron un recuento sanguíneo completo, análisis bioquímico del plasma sanguíneo y radiografía. Los hallazgos anormales incluyeron parámetros de inflamación elevados (hiperfibrinogenemia) y una masa grande en el hígado. El examen histológico de una biopsia del hígado indicó la presencia de hiperplasia de los conductos biliares, la cual condujo a un diagnóstico presuntivo de hepatotoxicosis. El ave mostró una mejoría inicial moderada al recibir tratamiento de sostén, pero su condición declinó 9 días después de la biopsia del hígado. Se ensayó el tratamiento de sostén por segunda vez, sin embargo, el ave no mostró signos de mejoría y se eligió el uso de la eutanasia. A la necropsia, los hallazgos macroscópicos anormales se restringieron al hígado, el cual presentó múltiples nódulos oscuros que al corte producían un exudado amarillento. El examen histopatológico reveló una hiperplasia multicéntrica de los conductos biliares y colangiocarcinoma, al igual que hiperplasia papilar segmentada y adenocarcinoma en el proventrículo, ventrículo y en la totalidad del tracto intestinal. Este es el primer reporte de papilomatosis interna concurrente, adenocarcinoma gastrointestinal y colangiocarcinoma en una lora de frente dorada.

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