Recurrent mast cell tumor, forelimb of 16-year-old mixed-breed dog

Recurrent mast cell tumor, forelimb of 16-year-old mixed-breed dog

Photograph of a recurrent mast cell tumor in the forelimb of 16-year-old mixed-breed dog. This tumor stretched the skin slowly without causing ulceration, which can be typical of many mast cell tumors.

Courtesy of Dr. Rachel Jones.