Some dogs and cats develop oral growths. Similar to humans these growths may be benign or malignant. Once a mass is noticed analysis must be made to determine the cause of the growth.
Some masses are due to infections in the gums, or of the tooth itself.
Many are due to tumors. Most pets will not show signs of oral masses until the mass has grown to inhibit chewing or swallowing. The entire patient must be evaluated for tumor spread prior to surgery. Usually examination of regional lymph nodes as well as chest x-rays are taken. The veterinarian may take a sample of cells from the mass and examine them under the microscope to give an indication of whether the cause is due to infection or tumor.