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Feline Mast Cell Tumors

Jul 26, 2018

Mast cells are a type of normal white blood cell and are part of the immune system.  Mast cell tumors (MCT) comprise about 20% of all cutaneous (skin) tumors in the cat. These tumors can be benign (not cancerous) or malignant (cancerous and able to spread to other parts of the body). Over 90% of MCTs that occur in the skin of cats are benign while visceral (occurring in internal organs) MCTs may behave more aggressively.  This disease is seen mostly in middle-aged cats, and Siamese cats appear to be predisposed to getting this disease.