A challenging case: A cat with weight loss and an abdominal mass - Veterinary Medicine
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A challenging case: A cat with weight loss and an abdominal mass
This cat's cranial abdominal mass was identified on a preanesthetic physical examination performed before scheduled dental work. Follow along with these clinicians as they uncover an invasive disease.



Renal transitional cell carcinoma is a rare tumor in cats that has aggressive biologic behavior but can initially present with vague, nonspecific signs. Generally, the clinical signs are decreased appetite, weight loss, hematuria, or pyuria. Once a renal mass is recognized, initial diagnosis of renal tumors can be made by fine-needle aspirate cytology. This simple procedure can help identify cats that may benefit from nephrectomy. However, histologic confirmation should always be obtained after surgery, as the long-term prognosis varies with specific tumor type.

Andrew R. Lie, DVM*
Blaine Area Pet Hospital
11844 Aberdeen St. NE
Blaine, MN 55449

Cheri Nielsen, MS, DVM**
Department of Veterinary Clinical Sciences
College of Veterinary Medicine
University of Minnesota
St. Paul, MN 55108

Current addresses:
*Mission Pet Hospital
720 Valencia St.
San Francisco, CA 94110

**Pet Emergency and Specialty Center of Marin
901 E. Francisco Blvd., Suite C
San Rafael, CA 94901


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