Kidney mass in a dog
Case information
An 8-year-old spayed female white Husky presented to the referring veterinarian for evaluation of inappropriate urination. A mass in the left kidney was identified and the dog was referred to the Cornell University Hospital for Animals for further evaluation and treatment options. On physical examination, the patient was bright, alert, responsive, and well hydrated, but appeared slightly anxious. A routine CBC and serum biochemistry panel revealed a mild eosinopenia and a mildly increased alkaline phosphatase activity. On abdominal ultrasound, a mass involving the cranial pole of the left kidney was visualized. The mass appeared to be contained within the renal capsule. An ultrasound-guided fine needle aspiration of the mass within the left kidney was performed.
View the following photomicrographs and answer these questions:
- What are the leading differential diagnoses for a renal mass in the dog?
- How would you generally classify the cell population present (epithelial, mesenchymal, round)?
- Does the specific tumor type affect treatment selection in this patient?
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