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Lymphosarcoma in 10 New World Camelids

C K Cebra1, F B Garry, B E Powers

  • 1Department of Clinical Sciences, College of Veterinary Medicine and Biomedical Sciences, Colorado State University, Fort Collins 80523, USA.

Journal of Veterinary Internal Medicine
|November 1, 1995
PubMed
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Lymphosarcoma is a common cancer in New World Camelids, affecting llamas and alpacas. This study details clinical signs, diagnostic methods, and outcomes for affected animals.

Area of Science:

  • Veterinary Medicine
  • Oncology
  • Comparative Pathology

Background:

  • Lymphosarcoma is a significant neoplastic disease in New World Camelids.
  • Understanding its clinical presentation and pathology is crucial for diagnosis and treatment.

Purpose of the Study:

  • To evaluate the clinical and pathological features of lymphosarcoma in New World Camelids.
  • To identify characteristic clinical and clinicopathological findings.
  • To assess the survival time and common sites of neoplastic infiltration.

Main Methods:

  • Retrospective review of medical records from 10 New World Camelids diagnosed with lymphosarcoma.
  • Physical examination findings, clinicopathological data, and diagnostic methods (biopsy, aspirate, fluid analysis, necropsy) were analyzed.

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  • Tumor tissue from 5 animals was examined via electron microscopy for retroviral particles.

    • Main Results:

    • Lymphosarcoma was the most frequent neoplasm encountered in this population.
    • Common clinical signs included emaciation and palpable masses.
    • Characteristic clinicopathological findings were a left-shifted leukogram and hypoalbuminemia.
    • Median survival after diagnosis was short, averaging 1 month.
    • Neoplastic infiltration commonly affected lymph nodes, liver, kidneys, and lungs.
    • No retroviral particles were detected by electron microscopy.

    Conclusions:

    • Lymphosarcoma presents with distinct clinical and clinicopathological abnormalities in New World Camelids.
    • The disease typically follows a rapid clinical course with poor prognosis.
    • Further research may be needed to elucidate the etiology, as retroviral particles were not identified.