However large adenomas should be removed. Mast cell tumors are commonly found in older dogs. They are most common in Boxers, and Boston Terriers. The average dog with a Mast cell tumor is eight years old. Typically they are multinodular growths less then an inch in length.
Cancer is more likely when growth is rapid and size is greater than one inch.
Malignant mast cell tumors metastasize or spread to distant organs. Cortison may be given to decrease the size of the mast cell tumor. Though the best treatment is surgical removal. The next type of cancer is the Squamous cell carcinoma. It is a neoplasm or hard, flat, grayish liking ulcer that does not heal.