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Related Experiment Videos

Lymphosarcoma in a brook trout

K A Earnest-Koons1, J H Schachte, P R Bowser

  • 1Department of Microbiology and Immunology, College of Veterinary Medicine, Cornell University, Ithaca, New York 14853, USA.

Journal of Wildlife Diseases
|July 1, 1997
PubMed
Summary
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A lymphoblastic lymphoma was diagnosed in a brook trout, affecting multiple organs including the kidney. This diagnosis in the fish highlights the importance of monitoring for cancers in aquaculture settings.

Area of Science:

  • Ichthyology
  • Aquatic Animal Health
  • Veterinary Pathology

Background:

  • Brook trout (Salvelinus fontinalis) are commercially important aquaculture species.
  • Early detection and diagnosis of diseases are crucial for maintaining healthy fish populations in hatcheries.

Observation:

  • A 2-year-old female brook trout from a New York hatchery presented with a significantly enlarged kidney.
  • Necropsy revealed gross abnormalities, prompting further histopathological examination.

Findings:

  • Histopathology confirmed lymphoblastic lymphoma, a type of cancer, in the brook trout.
  • The tumor infiltrated multiple organs, including the kidney, musculature, intestines, liver, gills, pseudobranch, and ovary.
  • The precise origin of the tumor was undetermined, but the kidney was a potential primary site.

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Implications:

  • This case underscores the potential for lymphomagenesis in farmed fish populations.
  • Understanding tumor origins and spread is vital for disease management strategies in aquaculture.
  • Further research into piscine cancers can inform biosecurity and health protocols in fish hatcheries.