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Diffuse intestinal T cell lymphosarcoma in a yellow-naped Amazon parrot (Amazona ochrocephala auropalliata)
Journal of Veterinary Diagnostic Investigation (2008)
  • Marcy J Souza, University of Tennessee - Knoxville
  • Shelley Newman, University of Tennessee - Knoxville
  • Cheryl B Greenacre, University of Tennessee - Knoxville
  • J S Avenell
  • J S Wall
  • J C Phillips
  • Michael M Fry, University of Tennessee - Knoxville
  • Robert L Donnell, University of Tennessee - Knoxville
  • Gregory B Daniel

A 10-year-old, intact, female yellow-naped Amazon parrot was examined because of anemia, lymphocytic leukocytosis, regurgitation, and weight loss. A positive fecal occult blood and monoclonal globulinopathy were present. A distended proventriculus and diffusely thickened loops of small intestine with irregular luminal surfaces were identified with contrast radiography and contrast computed tomography. A micro positron emission tomography scan was performed with (18)F-fluorodeoxyglucose. Diffuse intestinal T-cell lymphosarcoma was diagnosed based on histopathology and immunohistochemistry of full thickness small intestinal biopsies. The patient was treated with a multidrug chemotherapy protocol with little to no effect. Euthanasia was elected, and intestinal lymphosarcoma was confirmed on histopathology of necropsy intestinal samples; no other organs demonstrated neoplastic infiltration. To the authors' knowledge, no reports are currently available detailing the clinical presentation or diagnosis of diffuse intestinal T-cell lymphosarcoma in any avian species.

  • Animals,
  • Bird Diseases pathology,
  • Euthanasia,
  • Intestinal Neoplasms pathology,
  • Intestinal Neoplasms radiography,
  • Intestinal Neoplasms veterinary,
  • Lymphoma,
  • Non Hodgkin pathology,
  • Lymphoma,
  • Non Hodgkin radiography,
  • Lymphoma,
  • Non Hodgkin veterinary,
  • Lymphoma,
  • T Cell,
  • Cutaneous pathology,
  • Lymphoma,
  • T Cell,
  • Cutaneous radiography,
  • Lymphoma,
  • T Cell,
  • Cutaneous veterinary,
  • Parrots,
  • Positron Emission Tomography veterinary
Publication Date
Citation Information
Marcy J Souza, Shelley Newman, Cheryl B Greenacre, J S Avenell, et al.. "Diffuse intestinal T cell lymphosarcoma in a yellow-naped Amazon parrot (Amazona ochrocephala auropalliata)" Journal of Veterinary Diagnostic Investigation Vol. 20 Iss. 5 (2008)
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