While the exact causes of salivary gland cancers are not fully understood, several factors are believed to increase the risk. A significant risk factor is the prolonged presence of benign tumors within the salivary glands. For this reason, even benign growths are often surgically removed. Exposure to radiation is another identified risk factor. Additionally, tobacco use, a well-established contributor to many cancers, also increases the likelihood of developing salivary gland cancer.