Understanding Malignant Melanoma in Dogs: A Comprehensive Guide

Malignant melanoma stands out as the most prevalent oral tumor in dogs, accounting for 30%-40% of all malignant oral tumors. This article aims to provide a detailed overview of malignant melanomas in canines, focusing on their prevalence, risk factors, symptoms, and treatment options.

Prevalence and Risk Factors: Malignant melanoma typically affects older dogs, with an average onset age of around 12 years. It is more common in male dogs and is seen with a higher frequency in dogs with darker oral mucosa. Certain breeds, such as Chow Chows and Golden Retrievers, are at a higher risk of developing this condition.

Symptoms and Diagnosis: Malignant melanomas in dogs can occur in various locations within the mouth, including the gums, cheek mucosa, lips, hard and soft palates, and the tongue. These tumors are often firm and darkly pigmented, although about 33% of cases may present as non-pigmented tumors. They can sometimes have ulcerated or necrotic surfaces. Rapid growth and local infiltration are characteristic of these tumors.

Treatment and Management: The management of malignant melanoma in dogs requires an integrated approach involving surgical removal, possibly followed by radiation therapy or chemotherapy. The prognosis depends on the stage of the tumor at diagnosis and the effectiveness of the treatment.

Early detection and prompt treatment are key in managing malignant melanoma in dogs. Regular veterinary check-ups and awareness of the symptoms can help in early diagnosis, improving the chances of successful treatment.