etiology: unknown
method of transmission: unknown
characteristics: can affect any organ, respiratory system is main target; salivary gland enlargement, xerostomia; firm or spongy papular or nodular growths found on gingiva, lips, palate, buccal mucosa, or tongue
dental implications: good OHI necessary; management of xerostomia symptoms
tx & prognosis: spontaneous resolution possible; corticosteroids; good prognosis