Cholangiocarcinoma and Cloacal Prolapse in a Yellow-crowned Amazon Parrot (Amazona ocrocephala)

아마존앵무에서 병발한 담관암종과 총배설강 탈출증

  • Published : 2009.10.31

Abstract

This report deals with a 3-year-old male Yellow-crowned Amazon (Amazona orcrocephala) that died after twenty five days history of cloacal prolapse. On necropsy, multiple to occasionally coalescing well-demarcated tan nodules were scattered throughout the entire liver lobes. The nodules were firm and slightly elevated from the surface. The neoplastic nodules were also recognized on cut sections of the liver. Histologically, the nepatic nodules consisted of cuboidal to low columnar cells forming tubular to acinar pattern with marked desmoplasia. The neoplastic cells had small to moderate amounts of eosinophilic cytoplasm and round nucleus with one to two prominent nucleoli. Based on these results, hepatic nodules was diagnosed as primary cholangiocellular carcinoma.

References

  1. Altman RB, Clubb SL, Dorrestein GM, Quesenberry K. Avian medicine and surgery. U.S.A: Saunders. 1997: 1007
  2. Anderson WI, Dougherty EP, Steinberg H. Cholangiocarcinomain a 4-month-old double yellow-cheeked Amazon parrot (Amazona autumnalis). Avian Dis. 1989; 33: 594-599 https://doi.org/10.2307/1591128
  3. Coleman CW. Bile duct carcinoma and cloacal prolapse in an orange-winged Amazon parrot (Amazona amazonica amazonica). J As soc. Avian Vet. 1991; 5: 87-89 https://doi.org/10.2307/30133280
  4. Elangbam CS, Panciera RJ. Cholangiocarcinoma in a blue-fronted Amazon parrot (Amazona esiva). Avain Dis. 1988; 32: 594-596 https://doi.org/10.2307/1590938
  5. Gibbons PM, Busch MD, Tell LA, Graham JE, Lowenstine LJ. Internal papillomatosis with intrahepatic cholangiocarcinoma and gastrointestinal adenocarcinoma in a peach-fronted conure (Aratinga aurea). Avian Dis. 2002; 46: 1062-1069 https://doi.org/10.1637/0005-2086(2002)046[1062:IPWICA]2.0.CO;2
  6. Harcourt-Brown N, Chitty J. BSAVA Manual of psittacine birds, 2nd ed. Gloucester: BSAVA. 2005: 161, 189, 246-248
  7. Meuten DJ. Tumors in domestic animals, 4th ed. Iowa: A Blackwell Publishing Company. 2002: 495-499
  8. Potter K, Connor T, Gallina AM. Cholangiocarcinoma in a yellow-faced Amazon parrot (Amazona xanthops). Avian Dis. 1982; 27: 556-558
  9. Tully TN, Lawton MPC, Dorrestein GM. Avian medicine. Eastbourne: Butterworth-Heinemann. 2000: 115