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LVVSC Oncologist Dr. Andrew Vaughan wrote this article on the diagnosis and treatment of canine mast cell tumors. Canine Mast Cell Cancer Mast cell cancer is the most common skin cancer in dogs. It is encountered most frequently in middle-aged to older dogs of many different breeds.The most commonly affected breeds are Pugs, Boxers, Bulldogs, and Boston Terriers but any breed can be affected. There may be an association between the development of mast cell cancer and prior chronic inflammation of the skin although this is unproven. Although sunlight exposure can contribute to other cancers of the skin in people

What is Trichiasis? Trichiasis is a condition where normal hairs have grown inward towards center of the eye and rub on the cornea or the conjunctiva causing irritation. This may lead to ulceration of the cornea. Theses hairs are located in the medial canthus, where the two eyelids meet near the nose. What animals are affected? Dogs have a higher incidence rate over cats, particularly younger dogs. The breeds most commonly affected are pugs, shih-tzus, bulldogs, and lhasa apsos. Any breed with excessive skin folding can be affected. In some cases normal aging has caused the eyelids to droop and