Oral malignant melanoma with osteoid formation in a dog.

Melanomas are the most frequent malignant neoplasms of the oral cavity of dogs. Osteogenic melanoma is a rare variant of melanoma that has been described in humans but not in animals. We describe a case of malignant melanoma with bone production affecting the gingiva of a 12-year-old Miniature Dachshund dog. The tumor was a round, lightly pigmented mass… (More)