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Pathology in Practice

Kaikhushroo H. Banajee DVM1, Patricia S. Gaunt DVM, PhD2, Lester Khoo VMD, PhD3, and Stephen D. Gaunt DVM, PhD4
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  • 1 Department of Pathobiological Sciences, School of Veterinary Medicine, Louisiana State University, Baton Rouge, LA 70803.
  • | 2 Department of Pathobiology and Population Medicine, Thad Cochran National Warmwater Aquaculture Center, College of Veterinary Medicine, Mississippi State University, Stoneville, MS 38776.
  • | 3 Department of Pathobiology and Population Medicine, Thad Cochran National Warmwater Aquaculture Center, College of Veterinary Medicine, Mississippi State University, Stoneville, MS 38776.
  • | 4 Department of Pathobiological Sciences, School of Veterinary Medicine, Louisiana State University, Baton Rouge, LA 70803.
History

In March 2012, 2 stocker size (approx 50 g) channel catfish (Ictalurus punctatus), approximately 9 months of age, from a commercial catfish farm were brought to the Thad Cochran National Warmwater Aquaculture Center, Stoneville, Miss, for health assessment and necropsy following euthanasia. Several hundred fish had previously died on the farm.

Clinical and Gross Findings

The fish were euthanized by an immersion method with water containing tricaine methanesulfonatea (MS-222), and necropsies were performed. During necropsy of one of the fish, an approximately 3-cm-diameter, spherical, firm, smooth, pale pink, posterior kidney mass was noted (Figure

Contributor Notes

Address correspondence to Dr. Banajee (kbanaj1@lsu.edu).