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Vet Pathol 43:276-280 (2006)
© 2006 American College of Veterinary Pathologists

Renal Tubular-cell Neoplasms in Black-footed Ferrets (Mustela nigripes)–38 Cases

S. Lair, I. K. Barker, K. G. Mehren and E. S. Williams

Toronto Zoo, Toronto, Ontario, Canada (SL,2 KGM), Ontario Veterinary College, University of Guelph, Guelph, (SL, IKB), Ontario, Canada, Department of Veterinary Sciences, University of Wyoming, Laramie, WY (ESW)

Thirty-eight cases of renal tubular cell neoplasms were diagnosed in 184 captive, adult (>1-year-old), black-footed ferrets (Mustela nigripes) examined from 1985 to 1996. This prevalence (20.7%) is one of the highest reported for this neoplasm in a population of animals. These tumors rarely metastasized (1/38), and usually were incidental postmortem findings, associated clinical disease being present in only 3 (8%) of the 38 cases. The prevalence of renal tubular cell neoplasms found at postmortem examination increased linearly with age, up to 67% in ferrets >8 years old. Both males (prevalence = 19%) and females (prevalence = 24%) were affected. Multiple renal tumors were common, and seven ferrets (18.4% of affected animals) had bilateral tumors. The cause of this neoplastic syndrome could not be determined. Since most of the animals affected by this condition were in their postreproductive years of life, the impact of this neoplastic syndrome on the captive propagation of this species is negligible.

Key words: Black-footed ferrets (Mustela nigripes); epidemiology; kidney; mustelids; neoplasia; pathology; renal tubular cell neoplasm.

Request reprints from Dr. Stéphane Lair, Département de sciences cliniques, Faculté de médecine vétérinaire, University of Montreal, C.P. 5000, St. Hyacinthe, Quebec J2S 7C6, (Canada). E-mail: stephane.lair{at}umontreal.ca






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