Extranodal sinonasal Rosai-Dorfman disease: a clinical study of 10 cases.

Sinonasal Rosai-Dorfman disease (S-RDD) is a rare form of RDD limited to the sinonasal cavity. Multipatient studies of Chinese S-RDD and documentation of its clinical spectrum are rare. This study aimed to identify the clinical profiles of Chinese S-RDD.