Malignant melanoma of lip and buccal mucosa, 12-year-old Labrador mix

Malignant melanoma of lip and buccal mucosa, 12-year-old Labrador mix

Photograph of malignant melanoma of lip and buccal mucosa in a 12-year-old Labrador Retriever mix. This mucocutaneous malignant melanoma appeared rapidly and exhibited a papillated surface. It was pedunculated, with a wide base involving the buccal mucosa.

Courtesy of Dr. Alice Villalobos.