Lymphoid aggregates
DESCRIPTION: Lymphoid aggregates appear as small, slightly elevated nodules that may be normal colored or have a slight yellow-orange hue. Those illustrated here are in the soft palate. They may be found anywhere in the mucosa but are especially common where the mouth meets the throat, including the base of the tongue. This lymphoid rich area has been called Waldeyer’s ring. When they occupy the same area as the foliate papillae, the papillae may take on a more nodular appearance. In the tongue they have been referred to as “lingual tonsils.”
ETIOLOGY: They are normal structures, components of Waldeyer’s ring.
TREATMENT: None required.
PROGNOSIS: Good. They may enlarge or regress in relationship to oral or upper respiratory infections.
DIFFERENTIAL DIAGNOSIS: Although foliate papillae and lymphoid aggregates of lingual tonsils may occupy the same area, they are different entities.
