Urologic Oncology.

Area of Science:

• Veterinary Oncology
• Small Animal Medicine
• Urologic Pathology

Background:

• Primary renal tumors are infrequent in small animals.
• Tumor presentation, treatment, and prognosis vary significantly by histologic type.
• Transitional cell carcinoma (TCC) is the predominant neoplasm affecting the urinary system in this population.

Purpose of the Study:

• To review the clinical presentation, diagnostic approaches, and therapeutic strategies for primary renal tumors in small animals.
• To specifically address the management of transitional cell carcinoma (TCC), including chemotherapy and palliative interventions.
• To provide an overview of prognostic factors influencing outcomes for affected animals.

Main Methods:

• Literature review of primary renal tumors and TCC in veterinary medicine.
• Analysis of clinical signs, diagnostic modalities, and treatment protocols.
• Evaluation of chemotherapeutic agents and palliative surgical techniques.

Main Results:

• Clinical signs of TCC include hematuria, stranguria, and pollakiuria.
• Metastasis commonly involves medial iliac lymph nodes, lungs, and vertebrae.
• Chemotherapy with mitoxantrone, vinblastine, carboplatin, toceranib phosphate, or chlorambucil is the primary treatment for TCC.
• Palliative interventional surgery (stenting, laser ablation) addresses urinary obstruction.

Conclusions:

• Early diagnosis and tailored treatment are crucial for managing primary renal tumors in small animals.
• Chemotherapy offers the most effective systemic treatment for TCC.
• Palliative surgical options can significantly improve quality of life by relieving urinary obstruction.