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Metastatic transmissible venereal sarcoma in a dog
Journal of the American Veterinary Medical Association
|March 1, 1987
Summary
A canine penile tumor was identified, spreading to lymph nodes and the liver. Transplantation studies confirmed the diagnosis of this aggressive cancer in the dog.
Area of Science:
- Veterinary Pathology
- Canine Oncology
- Comparative Pathology
Background:
- Penile and preputial tumors are uncommon in dogs.
- Serosanguineous exudate and inguinal fistulas can indicate advanced disease.
Observation:
- An adult male dog presented with a large penile sheath, preputial orifice exudate, and an inguinal cutaneous fistula.
- Physical examination revealed abnormalities suggestive of a neoplastic process.
Findings:
- Necropsy identified tumor masses on the penis, prepuce, superficial inguinal lymph nodes, external iliac lymph nodes, and liver.
- Histopathologic examination confirmed the neoplastic nature of the masses.
- Tumorigenicity was validated through successful transplantation studies.
Implications:
- This case highlights the potential for aggressive metastasis of penile tumors in dogs.
- Understanding the behavior of canine penile tumors is crucial for diagnosis and treatment.
- Transplantation studies offer a method for confirming tumor diagnoses and studying tumor biology.