DefinitionSalivary gland tumors are abnormal cells growing in the ducts that drain the salivary glands.Alternative NamesTumor - salivary ductCauses, incidence, and risk factorsThe salivary glands are located around the mouth. They produce saliva, which moistens food to help with chewing and swallowing.Saliva contains enzymes that begin the digestion process, and help cleanse the mouth by washing away bacteria and food particles. By keeping the mouth moist, saliva helps to keep dentures, retainers, or other orthodontic appliances in place.There are three pairs of major salivary glands. The largest are the parotid glands, located in each cheek over the jaw in front of the ears. Two submandibular glands are at the back of the mouth on both sides of the jaw. Two sublingual glands are under the