Most common nasal tumor in a dog and its treatment?

• A. Lymphoma — Chemotherapy
• B. Osteosarcoma — Amputation
• C. Melanoma — Immunotherapy
• D. Adenocarcinoma — Radiation therapy

Answer: (D)

Canine nasal tumors are most commonly nasal adenocarcinoma. This tumor tends to grow inside the nasal cavity and sinuses and is locally invasive, which makes complete surgical removal difficult or risky. Because of its location and behavior, radiotherapy offers the best chance for local tumor control while preserving nasal structure and function, making it the standard first-line approach for many nasal adenocarcinomas. Lymphoma is typically a systemic disease treated mainly with chemotherapy rather than a localized nasal therapy. Osteosarcoma in the nasal region is rare, and amputation isn’t a practical primary option for a nasal tumor. Melanoma can occur in the nasal mucosa but is less common than adenocarcinoma, and immunotherapy isn’t the usual first-line for these nasal tumors.