Varied manifestations of Rosai-Dorfman disease and its management - a case report and review of literature.

Rosai Dorfman disease or sinus histiocytosis is a rare, idiopathic, benign and self-limiting histiocytic proliferative disorder, usually seen in younger patients. It most commonly involves the cervical lymph nodes, with a predominant infiltration of sinusoidal histiocytes and classically presents with massive cervical lymhadenopathy. Extranodal disease occurs in about 43% of cases and produces different signs and symptoms depending upon its location. We report a case of this disorder in 22-year-old male with initial isolated involvement of bilateral nasal cavity and paranasal sinuses with subsequent involvement of cervical lymph nodes and skin. The clinical presentation, histologic characterstics, radiographic findings and treatment of the disease are discussed.