Poster 56: Oral Cavity Rosai-Dorfman Disease Without Lymphadenopathy: A Case Series From Two Institutions Within the Metropolitan New York Area

Abstract

Rosai-Dorfman disease (RDD) is a rare benign non-Langerhans cell histiocytic disorder of unknown etiology. Classically associated with significant lymphadenopathy, it is often referred to as Sinus Histiocytosis with Massive Lymphadenopathy (SHML). Rare examples of RDD without clinical or radiographic evidence of concomitant lymph node involvement have been reported; however, only five cases thus far have been reported of extranodal RDD localized to the oral cavity. We report only the sixth and seventh cases, adding valuable information to this rare entity.