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In the anterior portion on each side are the sublingual plicae or carunculae, slightly raised, cylindrical structures running from the midline to each side and housing openings of the sublingual glands (Fig. 1.49). At the most anterior portion of each is a more raised nodule with an opening to the submandibular gland (Wharton’s duct). The submandibular gland can be milked to see a less clear but not milky solution expressed from the duct. A stone in the duct can prevent the saliva from exiting. If the patient is edentulous and the mandible is greatly resorbed, then the floor of the mouth can appear dome-shaped as a tumor-like mass rising above the mandible and mimicking disease (Fig 1.50). Sometimes, hyperplastic, reactive oral tonsillar tissue may be noted in the floor of the mouth (Fig. 1.51). These may be associated with lymphoepithelial cysts or pseudocysts of tonsillar tissue.