What causes mast cell tumors?
The cause of mast cell tumors is unknown. What are the signs of mast cell tumor? The clinical signs associated with a mast cell tumor vary, depending on the location and stage of the tumor. The skin is the most common system affected in dogs, with most tumors developing over the limbs and trunk region. In such cases, one or multiple skin masses may be present. The masses may appear red and swollen. The spleen is a common primary location for mast cell tumors in cats. The clinical signs associated with mast cells tumors of the spleen include lack of appetite, enlargement of the spleen, anemia (decreased number of red blood cells), and ulcers of the stomach and small intestine. Lymph nodes may be enlarged in the dog or cat if the mast cell tumor has spread (metastasized) to other parts of the body. The animal may vomit. How are mast cell tumors diagnosed? Mast cell tumors are diagnosed by physical examination and tests to identify the type of tumor. Mast cell tumors can be diagnosed thro