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Pathology in Practice

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  • 1 1Henry Doorly Zoo and Aquarium, 3701 S 10th St, Omaha, NE 68107.
  • | 2 2Department of Clinical Sciences, Kansas State University, Manhattan, KS 66505.
  • | 3 3Department of Diagnostic Medicine/Pathobiology, Kansas State University, Manhattan, KS 66505.
History

A 3-year-old 0.285-kg (0.627-lb) sexually intact male pet rat (Rattus norvegicus) was evaluated at the Kansas State University Veterinary Health Center because of neurologic deficits of the hind limbs, dermatologic lesions, and a palpable abdominal mass that was first palpated 3 months earlier.

Clinical and Gross Findings

On examination, the rat was mildly dehydrated (5% to 7%) and tachypneic with good body condition. Multifocal, scabbed, alopecic, and hyperpigmented flat lesions on the skin (≤ 1 cm in diameter) were identified in numerous locations. A 4- to 5-cm-diameter, firm, mobile, and predominately right-sided mass was palpated in the

Contributor Notes

Dr. Shrader's present address is Lincoln Children's Zoo, 1222 S 27th St, Lincoln, N E 68502.

Address correspondence to Dr. Shrader (tshrader@lincolnzoo.org).