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| | UpToDate Salivary gland tumors |
 | | Other sites include the submandibular gland (8 to 15 percent), the sublingual gland (less than 1 percent), and the minor salivary glands, which are most densely concentrated in the hard palate (5 to 8 percent), but present throughout the upper aerodigestive tract. |
 | | As a general rule, the smaller the salivary gland in adults, the higher the probability that a neoplasm arising in such a gland will be malignant [1]. |
 | | Malignant tumors comprise 15 to 25 percent of all parotid tumors, 37 to 43 percent of submandibular gland tumors, and over 80 percent of minor salivary gland tumors [2,3]. |
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